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What is the remainder when 65^99 is divided by 11?
CDS I 2023
0
5
9
10
Consider the following numbers :
1. 437
2. 797
3. 1073
How many of the above numbers are prime ?
CDS I 2023
1
2
3
0
The sum of digits of a 2-digit number is 12. When the digits are reversed, the number becomes greater by eighteen. What is the difference between the digits in the number ?
CDS I 2023
1
2
3
4
When every even power of every odd integer (greater than 1) is divided by 8, what is the remainder ?
CDS I 2023
3
2
1
The remainder is not necessarily 1
It is given that 5 does not divide n - 1, n and n + 1, where n is a positive integer. Which one of the following is correct?
CDS I 2023
5 divides (n² + 1)
5 divides (n² - 1)
5 divides (n² + n)
5 divides (n² - n)
What is the largest 5-digit number, which leaves remainder 7, when divided by 18 as well as by 1 ?
CDS I 2023
99981
99988
99997
99999
Average marks in Mathematics of Section A comprising 30 students is 65 and that of Section B comprising 35 students is 70. What are the average marks (approximately) of both the sections if it was detected later that an entry of 47 marks was wrongly made as 74?
CDS I 2023
67.28
67.58
68.11
68.63
Consider the following statements in respect of all factors of 360 :
1. The number of factors is 24.
2. The sum of all factors is 1170.
Which of the above statements is/are correct?
CDS I 2023
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Consider a 6-digit number of the form XYXYXY. The number is divisible by :
CDS I 2023
3 and 7 only
7 and 13 only
3, 13 and 37 only
3, 7, 13 and 37
Let m and n be natural numbers. What is the minimum value of (m + n) such that 33m + 22n is divisible by 121?
CDS I 2023
3
4
5
10
The number 97^30 - 14^30 is divisible by:
CDS I 2023
37 but not 83
83 but not 37
Both 37 and 83
Neither 37 nor 83
Consider the following statements :
1. n³ - n is divisible by 6
2. n⁵ - n is divisible by 5
3. n⁵ - 5n³ + 4n is divisible by 120
Which of the statements given above are correct ?
CDS I 2023
1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
What is the last digit of the sum S = 9²⁷ + 27⁹ ?
CDS I 2023
3
6
7
9
If three times the greater of two numbers is divided by the smaller number, the quotient will be 6 and the remainder will be 6. If five times the smaller number is divided by the greater number, the quotient will be 2 and the remainder will be 3. What is the difference between the numbers ?
CDS II 2022
8
9
10
12
There are two natural numbers x and y, where x >.y When x is divided by 6, it leaves the remainder 2 and; when y is divided by 6, it 22. leaves the remainder 3. What is the remainder when (x - y) is divided by 6?
CDS II 2022
1
3
5
Remainder cannot be determined
The value of a 2-digit number is 5 times the sum of the digits. What is the product of the digits ?
CDS II 2022
15
18
20
27
Consider the number N= 12⁶ × 3⁸ x 5³. Which of the following statements is/are correct ?
1. The number of odd factors of N is 60.
2. The number of even factors of N is 720.
Select the correct answer using the code given below:
CDS II 2022
1 only
2 only
Both 1 and 2
Neither 1 nor 2
If p is the difference between a number and its reciprocal and q is the difference between the square of the same number and the square of its reciprocal, then what is p⁴ + 4p² equal to ?
CDS II 2022
4q
8q
4q²
q²
What is the median of all possible factors of 120 ?
CDS II 2022
10
11
12
13.5
Select the missing number from the given alternatives :
69th BPSC
56
77
66
63
How many numbers between 200 and 600 are divisible by 4, 5 and 6?
67th BPSC
4
6
8
None of the above
The difference between the squares of two numbers is 256000 and the sum of the numbers is 1000. The number are
67th BPSC
600,400
640,360
628,372
None of the above
If sign +, represents multiplication, x addition; - division, ÷ difference, > equal and = represents greater than, then which of the following relation is true?
62nd BPSC
12 - 2 + 3 ÷ 8 x1 > 12
11 × 2 ÷ 4 - 2 + 1 = 11
7 ÷ 2 × 5 - 5 + 2 = 7
None of the above
How many times the digit 9 occurs in the numbers from 100 to 999?
62nd BPSC
228
248
280
None of the above
Which one of the following cannot be the square of a natural number?
66th BPSC
26569
143642
30976
None of the above
How many prime numbers are there between 1 and 50?
64th BPSC
14
15
16
17
A number when divided by 342 gives a remainder 47. When the same number is divided by 19, what would be the remainder?
63rd BPSC
8
9
11
13
How many numbers between 11 and 90 are divisible by 7?
63rd BPSC
9
10
11
12
How many numbers between 100 and 500 are divisible by 4, 5 and 6?
67th [RE] BPSC
6
7
8
9
What are the two natural numbers whose product is 2400 and the sum of whose squares is 5200?
67th [RE] BPSC
80, 30
75, 32
60, 40
None of the above
If the median of observations
12, 1, 8, 54, 61, 28, 45, 35, 21, 17
is M, then what is the value of 2M + 5?
CDS II 2023
12
28
54
45
A 2-digit number is such that the sum of the number and the number obtained by reversing the order of the digits of the number is 55. Further, the difference of the given number and the number obtained by reversing the order of the digits of the number is 45. What is the product of the digits?
CDS II 2023
0
2
5
1
What is the digit at the 100th place of number (225)⁴⁰ ?
CDS I 2024
6
5
4
2
When the number 12345678910111213 . . . 99100 is divided by 16, what will be the remainder?
CDS I 2024
15
12
4
3
What is the smallest natural number n such that (n + 1) x n x (n - 1) x (n - 2) x . . . 3 x 2 x 1 is divisible by 910 ? (where x is multiplication symbol)