Question

1. Using divisibility test, determine which of the following numbers are divisible by2,3,4,5,6,8,9,10
(i) 17128
(ii) 2517990
(iii) 201586
(iv) 787275
(v)12034056
(vi)1572
(vii) 25352
(viii) 9000​

Answer 1

Answer:

(1) 17128is divisible by 2,4,8

(2) 2517990 is divisible by 2,3,5,6,10

(3) 201586 is divisible by 2

(4)787275 is divisible by3,5,9

(5) 12034056 is divisible by 2,3,4,6,8

(6) 1572 is divisible by 2,3,4,6

(7) 25352 is divisible by 2,4,8

(8) 9000 is divisible by 2,3,4,5,6,8,9,10

Step-by-step explanation:

• For any no.to be divisible by 2 the last no.should be even or zero
• For any no.to be divisible by 3 the sum of digits of a no.must be divisible by 3
• For any no.to be divisible by 4 the last two digits must be divisible by 4
• For any no.to be divisible by 5 the last digit should be zero or five
• For any no.to be divisible by 6 ,it must be divisible by 2 and 3
• For any no.to be divisible by 8 ,the last three digits must be divisible by 8
• For any no.to be divisible by 9 tge sum of all the digits of the no.must be divisible by 9
• For any no.to be divisible by 10 the last digit must be zero

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