Mathematical Operations · SSC CGL previous year questions

Study the given pattern carefully and select the number that can replace the question mark (?) in it. (14, 10, 9) (6, 8, 2) (8, 4, ?) (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 — Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

1. A.4
2. B.6
3. C.3
4. D.5

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation. 256 * 4 * 9 * 3 * 14 = 51

1. A.× + − ÷
2. B.÷ × − +
3. C.× ÷ + −
4. D.÷ − × +

Which two signs should be interchanged to make the given equation correct? 588 ÷ 28 × 32 + 72 – 160 = 760

1. A.– and +
2. B.÷ and –
3. C.+ and ×
4. D.÷ and +

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation. 150 * 3 * 10 * 2 * 7 * 46

1. A.÷, +, −, ×, =
2. B.−, ×, +, ÷, =
3. C.+, −, ÷, ×, =
4. D.×, +, ÷, −, =

Which two signs should be interchanged to make the given equation correct? 294 + 14 × 4 ÷ 16 - 67 = 33

1. A.+ and ÷
2. B.× and ÷
3. C.+ and -
4. D.- and ÷

Study the given pattern carefully and select the number that can replace the question mark (?) in it. First row - 8, 28, 53 Second row - 7, 25, 47 Third row - 13, 43, ? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed)

1. A.93
2. B.85
3. C.95
4. D.83

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation. 86 * 54 * 34 * 68 * 2 * 33

1. A.-, +, ÷, ×, =
2. B.÷, -, +, ×, =
3. C.×, ÷, ×, -, =
4. D.+, ÷, ×, -, =

Which two signs should be interchanged to make the given equation correct? 60 × 4 + 9 ÷ 3 - 8 = 34

1. A.+ and -
2. B.÷ and +
3. C.+ and ×
4. D.÷ and ×

Which two signs should be interchanged to make the given equation correct? 117 ÷ 13 + 16 × 540 - 40 = 644

1. A.÷ and+
2. B.+ and ×
3. C.- and +
4. D.÷ and -

By Interchanging the given two numbers which of the following equation will be correct? 4 and 6

1. A.4 ÷ 2 + 3 - 6 × 5 = -14
2. B.9 ÷ 3 + 6 × 5 - 4 = 18
3. C.4 × 3 + 6 - 2 ÷ 1 = 21
4. D.4 - 6 ÷ 2 + 3 × 5 = 20

Select the odd group of numbers. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.13 - Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

1. A.(14 - 28 - 42)
2. B.(16 - 32 - 64)
3. C.(18 - 36 - 72)
4. D.(12 - 24 - 48)

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation. 50 * 10 * 20 * 5 * 105

1. A.÷, ×, +, =
2. B.×, -, +, =
3. C.÷, ×, -, =
4. D.×, ÷, +, =

Which of the following interchange of numbers and mathematical signs would make the given equation correct? 28 + 7 × 10 ÷ 5 - 20 = 5

1. A.10 and 20, × and +
2. B.5 and 20, - and ÷
3. C.7 and 28, × and ÷
4. D.5 and 10, + and ÷

Which two numbers from amongst the given options should be interchanged to make the given equation correct? 168 ÷ 4 + 216 ÷ ( 78 × 1 - 8) = 14

1. A.78 and 216
2. B.14 and 8
3. C.78 and 14
4. D.216 and 168

Select the correct combination of mathematical signs to sequentially replace the & signs, and to balance the given equation. [{(42 & 26) & (12 & 2)} & (4 & 5)] & 5 & 10

1. A.×, ÷, ×, ×, -, +, =
2. B.×, -, +, ×, ÷, ×, =
3. C.-, +, ×, ×, ÷, ×, =
4. D.-, +, ×, ÷, ×, ×, =

By Interchanging the given two numbers which of the following equation will be not correct? 7 and 4

1. A.8 ÷ 6 × 9 + 7 - 4 = 12
2. B.7 × 8 + 4 - 6 ÷ 3 = 37
3. C.9 - 4 × 3 + 6 × 7 ÷ 1 = 12
4. D.4 × 8 - 9 ÷ 3 + 7 = 57

Study the given pattern carefully and select the number that can replace the question mark (?) in it. First row - 12, 7, 32 Second row - 17, 13, 33 Third row - 14, 8, ? (NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed)

1. A.38
2. B.35
3. C.43
4. D.42

By Interchanging the given two numbers which of the following equation will be not correct? 9 and 6

1. A.7 + 6 × 4 ÷ 9 – 8 = 5
2. B.6 × 8 – 9 ÷ 3 + 5 = 75
3. C.9 × 7 + 4 ÷ 1 – 6 = 38
4. D.7 × 6 ÷ 3 + 9 – 8 = 19

By Interchanging the given two numbers which of the following equation will be correct? 2 and 8

1. A.8 ÷ 1 + 4 × 2 – 3 = 18
2. B.7 × 2 + 6 ÷ 3 – 8 = 60
3. C.2 × 4 – 8 + 6 ÷ 3 = 33
4. D.8 × 4 + 6 – 2 ÷ 1 = 6

Which two signs should be interchanged to make the given equation correct? 95 * 5 + 19 ÷ 2 − 21 = 36

1. A.÷ and *
2. B.+ and -
3. C.÷ and -
4. D.+ and *

After interchanging the given two numbers and two signs what will be the values of equation (I) and (II) respectively? ÷ and ×, 1 and 3 I. 6 + 4 - 9 × 3 ÷ 1 II. 4 × 3 - 1 + 8 ÷ 2

1. A.26, 17
2. B.-17, 17
3. C.9, 18
4. D.11, 15

Select the odd group of numbers. (NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

1. A.(57 - 53 - 49)
2. B.(60 - 56 - 52)
3. C.(50 - 46 - 42)
4. D.(47 - 43 - 37)

Which two signs and two numbers should be interchanged in the following equation to make it correct? 78 + 456 - 45 × 12 ÷ 4 = 519

1. A.12 and 4, - and ×
2. B.78 and 456, ÷ and ×
3. C.45 and 12, + and ÷
4. D.456 and 45, ÷ and -

Which two numbers, from amongst the given options, should be interchanged to make the given equation correct? [( ) ÷ 4]3 + (6)2 - (12 × 8) + 66 + (36 ÷ 12) = 65

1. A.6 and 8
2. B.66 and 65
3. C.4 and 8
4. D.66 and 36

By interchanging the given two signs which of the following equation will be not correct? + and ÷

1. A.18 + 6 – 6 ÷ 3 × 3 = 6
2. B.18 + 2 × 6 ÷ 3 – 7 = 50
3. C.7 × 8 ÷ 4 + 2 – 6 = 49
4. D.6 × 9 + 3 – 24 ÷ 8 = 2