HCF of two numbers =
Product of numbers ÷ their L.C.M
Product of numbers × their L.C.M
Product of numbers
None of these
The smallest number which when divided by 20, 25, 35 and 40 and leaves remainders as of 14, 19, 29 and 34 respectively is
1,394
1,404
1,664
1,406
Choose the Co-prime numbers from the following .
7 and 63
36 and 25
25 and 21
63 and 81
A number which is a factor of every number is:
0
1
2
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
The greatest number of 4-digits exactly divisible by 12,15, 20 and 35 is:
9,999
9,660
9,832
9,860
Prime factors of 140 are:
2 × 2 × 7
2 × 2 × 5
2 × 2 × 5 × 7
2 × 2 × 5 × 7 × 3
The sum of the first five multiples of 6 is:
90
60
30
120
LCM of 81, 18 and 36 is:
81
162
324
36
