Question

Find the number of divisors of 1800, which are all divided by 5 ?
Select one:
O a. 30
Ob. 36
C. 42
.
O d. 24​

Answer 1

Answer:

vah bhi 36 is a right answer of the device 100 divided by 5 is a right answer

Answer 2

(D) 24

To Find: number of divisors of 1800 which are all divided by 5

step 1 : Find factors of 1800

           1800 = 2³ × 3² × 5²

Step 2:  Take 5 common from the factors

                    = 5( 2³ × 3² × 5)

The number of proper divisors of 1800 which are also divisible by 5 are given by the numbers which is inside the parenthesis.

Step 3:  ∴ number of factors divisible by 5

                                                         divisors = = (3+1)(2+1)(1+1)

                                                         divisors = 4 × 3 × 2

                                                          divisors = 24

Hence, the number of divisors of 1800 which are divisible by 5 are 24.