Determine if 25110 is divisible by 45.

NCERT Math Class 6th Question – 10 Exercise 3.5

Determine if 25110 is divisible by 45.

Solution:

45 = 5 x 9
Here, 5 and 9 are co-prime numbers.
Test of divisibility by 5: unit place of the given number 25110 is 0. So, it is divisible by 5.
Test of divisibility by 9:
Sum of the digits = 2 + 5 + l + l + 0 = 9 which is divisible by 9.
So, yes the given number is divisible by 5 and 9 both. Hence, the number 25110 is divisible by 45.

NCERT Math Class 6th Question – 1 Exercise 3.5Click here
NCERT Math Class 6th Question – 2 Exercise 3.5Click here
NCERT Math Class 6th Question – 3 Exercise 3.5Click here
NCERT Math Class 6th Question – 4 Exercise 3.5Click here
NCERT Math Class 6th Question – 5 Exercise 3.5Click here
NCERT Math Class 6th Question – 6 Exercise 3.5Click here
NCERT Math Class 6th Question – 7 Exercise 3.5Click here
NCERT Math Class 6th Question – 8 Exercise 3.5Click here
NCERT Math Class 6th Question – 9 Exercise 3.5Click here
NCERT Math Class 6th Question – 11 Exercise 3.5Click here
NCERT Math Class 6th Question – 12 Exercise 3.5Click here

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