Q10 of 124 Page 1

Complete the missing entries in the following factor tree.

Let us take the last factors of the tree 3 and 7.

Then 3 × 7 = 21

Now we get the factors in the next level as 21 and 2.

So, 21 × 2 = 42

The missing entries are 42, 21.

Write the condition to be satisfied by q so that a rational number has a terminating 9 decimal expansion.

Write the condition to be satisfied by q so that a rational number has a non-terminating terminating decimal expansion.

The decimal expansion of the rational number will terminate after how many places of decimals?