CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next term: 96, 101, 95, 100, 94, 99, ?
A. 99
B. 104
C. 88
D. 93
Correct Answer: D
The operations alternate +5, -6. After the last +5, subtract 6: 99 - 6 = 93.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next term in the series: 33, 57, 89, 129, 177, ?
A. 225
B. 233
C. 281
D. 241
Correct Answer: B
The first differences are [24, 32, 40, 48]; their second difference is constant at 8. Continuing the pattern gives 233.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next number in the alternating series: 24, 61, 27, 67, 30, 73, ?
A. 79
B. 33
C. 30
D. 36
Correct Answer: B
Odd-position terms are 24, 27, 30, ... with difference 3. Hence the next odd-position term is 33.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next term: 15, 21, 36, 57, 93, 150, ?
A. 279
B. 243
C. 300
D. 186
Correct Answer: B
Each term is the sum of the previous two. Therefore 93 + 150 = 243.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next term: 11, 29, 40, 69, 109, 178, ?
A. 356
B. 287
C. 218
D. 327
Correct Answer: B
Each term is the sum of the previous two. Therefore 109 + 178 = 287.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the missing number: 69, 83, 97, ?, 125, 139
A. 97
B. 111
C. 139
D. 125
Correct Answer: B
This is an arithmetic series with common difference 14; the missing term is 111.
CSS - PMS - CCE - PCS - Mathematics
Number System
Classify 38/5.
A. Prime number
B. Irrational
C. Whole number
D. Rational
Correct Answer: D
38/5 is a ratio of two integers with a non-zero denominator, so it is rational.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next number: 5, 12, 26, 54, 110, ?
A. 224
B. 220
C. 222
D. 244
Correct Answer: C
Each term is obtained by ×2 + 2. So 110 × 2 + 2 = 222.
CSS - PMS - CCE - PCS - Mathematics
Number System
What digit x makes the number 762x divisible by 9?
A. 6
B. 3
C. 8
D. 4
Correct Answer: B
A number is divisible by 9 when its digit sum is divisible by 9. Thus 7+6+2+x must be a multiple of 9, giving x = 3.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next number in the alternating series: 26, 78, 30, 84, 34, 90, ?
A. 34
B. 42
C. 38
D. 96
Correct Answer: C
Odd-position terms are 26, 30, 34, ... with difference 4. Hence the next odd-position term is 38.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the missing number: 78, 84, ?, 96, 102, 108
A. 102
B. 96
C. 90
D. 84
Correct Answer: C
This is an arithmetic series with common difference 6; the missing term is 90.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next number: 25, 29, 38, 54, 79, ?
A. 115
B. 104
C. 109
D. 121
Correct Answer: A
The increments are consecutive squares: 4, 9, 16, 25; next add 6² = 36. So the answer is 115.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next number in the series: 9, 18, 27, 36, 45, ?
A. 63
B. 54
C. 45
D. 72
Correct Answer: B
The common difference is 9. So the next term is 45 + 9 = 54.
CSS - PMS - CCE - PCS - Mathematics
Number System
Classify 21/18.
A. Rational
B. Irrational
C. Whole number
D. Prime number
Correct Answer: A
21/18 is a ratio of two integers with a non-zero denominator, so it is rational.
CSS - PMS - CCE - PCS - Mathematics
Number System
What digit x makes the number 952x divisible by 9?
A. 7
B. 5
C. 2
D. 3
Correct Answer: C
A number is divisible by 9 when its digit sum is divisible by 9. Thus 9+5+2+x must be a multiple of 9, giving x = 2.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next term: 4, 9, 16, 25, 36, ?
A. 63
B. 49
C. 35
D. 50
Correct Answer: B
The terms follow 1n² + 0 for consecutive n. For n = 7, the term is 1×7² + 0 = 49.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next number in the alternating series: 25, 53, 27, 46, 29, 39, ?
A. 29
B. 31
C. 32
D. 33
Correct Answer: B
Odd-position terms are 25, 27, 29, ... with difference 2. Hence the next odd-position term is 31.
CSS - PMS - CCE - PCS - Mathematics
Number System
What least number must be subtracted from 1049 so that the result is exactly divisible by 6?
A. 11
B. 5
C. 4
D. 1
Correct Answer: B
The remainder is 5; subtracting the remainder makes the number divisible by 6.
CSS - PMS - CCE - PCS - Mathematics
Number System
Find the next number: 12, 19, 29, 42, 58, ?
A. 80
B. 74
C. 77
D. 65
Correct Answer: C
The differences are 7, 10, 13, 16, increasing by 3. The next difference is 19, so the answer is 77.
CSS - PMS - CCE - PCS - Mathematics
Number System
What least number must be subtracted from 358 so that the result is exactly divisible by 29?
A. 10
B. 9
C. 39
D. 19
Correct Answer: A
The remainder is 10; subtracting the remainder makes the number divisible by 29.