Playing with Nu...

A number is divisible by both 6 and 13. By which of the following other numbers will that number be always divisible?

What least value should be given to *, so that the number 750*64 is divisible by 11?

The number (17, 23) are _____ numbers.

The HCF of two consecutive even numbers is

If a number has exactly two factors, 1 and itself, then it is a/an

Observe the following patterns. Then find the sum of 1 + 3 + 5 + 7 + 9 + ....+ 21.

1 = 1 x 1 = 1
1 + 3 = 2 x 2 = 4
1 + 3 + 5 = 3 x 3 = 9
1 + 3 + 5 + 7 = 4 x 4 = 16
1 + 3 + 5 + 7 + 9 = 5 x 5 = 25
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The HCF of the denominator and the numerator of a fraction, which is in its lowest form,

The two numbers nearest to 10,000, which are exactly divisible by each of 3, 5, 7, 8 and 9, are