287470 Multiplicative identity of whole numbers is ..........
1Solution:Multiplicative identity is a number with which when multiplied should give the result as the same number.
287471 The smallest number which is neither prime nor composite is:
1
287472 587 × 99 = ?
58113Solution:587 × 99= 587 × (100 - 1)= 587 × 100 - 587 × 1= 58700 - 587= 58113
287473 Which of the following numbers is a prime number?
97Solution: Since, factors of,91 = 1 × 7 × 13 81 = 1 × 3 × 3 × 3 × 387 = 1 × 3 × 2997 = 1 × 97Thus, 81, 87 and 91 all are not prime numbers.
