Sequence Identification | MCQs

Explanation

the greatest number is 9,86,54,210. We arrange the given digits in ascending order to form the smallest number. Hence, the smallest number is 1,02,45,689.

Formation of Greatest and Smallest Numbers.

To Form the Greatest Number To Form the Smallest Number

The smallest digit in the ones place that is 3. The next smallest digit in the ones place that is 9.

Explanation

We see that 32 + 8 = 40 and 32 – 8 = 24. Now let us check this rule for one more term. We see that 16 + 8 = 24. Therefore this works for more than half of the given numbers. Hence the rule is correct. Therefore the missing number in the series is 16 – 8 =  8. The answer is  8.