Prime factors of 140 are:
2 × 2 × 7
2 × 2 × 5
2 × 2 × 5 × 7
2 × 2 × 5 × 7 × 3
Successor of every even number is:
Even
Prime
Odd
None of these
Which of the following statement is true?
All prime numbers are odd
All prime numbers are even.
There is only one even prime number.
There is only one odd prime number.
The greatest number that will divide 37, 50, 123 leaving remainder 1, 2 and 3 respectively is.
9
10
15
12
Four bells ring at intervals of 6, 7, 8 and 9 seconds respectively. All the bells rings together after _________ seconds.
504
516
508
512
HCF of 120, 144 and 216 is:
38
24
120
144
LCM of two numbers =
Product of numbers ÷ their HCF
Product of numbers × their HCF
Product of numbers
The smallest number of 4-digits exactly divisible by 12, 15, 20 and 35 is:
1,000
1,160
1,260
LCM of 81, 18 and 36 is:
81
162
324
36
HCF of 24, 36 and 92 is:
4
