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Number System

LCM of two numbers is 180. Then which of the following is not the
HCF of the numbers?
(A) 45 (B) 60 (C) 75 (D) 90

30/10/2024

Mathematics

6th

Number System

LCM of 10, 15 and 20 is
(A) 30 (B) 60 (C) 90 (D) 180

30/10/2024

Mathematics

6th

Number System

Which of the following numbers is divisible by 11?
(A) 1011011 (B) 1111111 (C) 22222222 (D) 3333333

30/10/2024

Mathematics

6th

Number System

Which of the following pairs is not coprime?
(A) 8, 10 (B) 11, 12 (C) 1, 3 (D) 31, 33

30/10/2024

Mathematics

6th

Number System

The number of common prime factors of 75, 60, 105 is
(A) 2 (B) 3 (C) 4 (D) 5

30/10/2024

Mathematics

6th

Number System

The greatest number which always divides the product of the predecessor and successor of an odd natural number other than 1, is
(A) 6 (B) 4 (C) 16 (D) 8

30/10/2024

Mathematics

6th

Number System

The sum of the prime factors of 1729 is
(A) 13 (B) 19 (C) 32 (D) 39

30/10/2024

Mathematics

6th

Number System

A number is divisible by 5 and 6. It may not be divisible by
(A) 10 (B) 15 (C) 30 (D) 60

30/10/2024

Mathematics

6th

Number System

The largest number which always divides the sum of any pair of
consecutive odd numbers is
(A) 2 (B) 4 (C) 6 (D) 8

30/10/2024

Mathematics

6th

Number System

If the number 7254*98 is divisible by 22, the digit at * is
(A) 1 (B) 2 (C) 6 (D) 0

30/10/2024

Mathematics

6th