A number is divisible by 6 if
The sum of digits is divisible by 6
It is divisible by 3
It is divisible by 2
If it is divisible by both 2 and 3
The least number which when divided by 9, 12, 16, 30 leaves in each case a remainder of 3 is:
720
723
823
750
Choose the Co-prime numbers from the following primes.
7 and 63
36 and 25
25 and 21
63 and 81
Example for co-prime numbers is:
25, 14
18, 16
9, 18
11, 77
L.C.m of 17 and 5 is:
105
95
85
5
20 is written as product of prime as:
2 × 5
2 × 2 × 3 × 5
2 × 2 × 5
2 × 2 × 3
The numbers which have more than two factors are called.
Even
Prime
Composite
None of these
The prime number which comes instantly after 43 is:
49
45
47
The LCM two numbers is x and their HCF is Y. The product of two numbers is:
x/y
y/x
x + y
xy
All numbers with 1,3,5,7 or 9 in the unit place are called ________ numbers.
odd
even
rational
