Given an example of a number which is divisible by

Question

(i) 2 but not by 4.

(ii) 3 but not by 6.

(iii) 4 but not by 8.

(iv) Both 4 and 8 but not by 32

Asked by Sakshi | 1 year ago | 31

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Class 8 Maths Playing with Numbers Add Answer

Which of the following numbers are divisible by 11:

(i) 10835

(ii) 380237

(iii) 504670

(iv) 28248

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(i) 64 × 2456

(ii) 86 × 6194

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(i) 97 × 542

(ii) 709 × 94

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In each of the following replace × by a digit so that the number formed is divisible by 9

(i) 49 × 2207

(ii) 5938 × 623

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Class 8 Maths Playing with Numbers View Answer

Accepted Answer

(i) 2 but not by 4.

Any number which follows the formula of 4n + 2 is an example of a number divisible by 2 but not by 4.

i.e., 10 where n = 1.

(ii) 3 but not by 6.

Any number which follows the formula of 6n + 3 is an example of a number divisible by 3 but not by 6.

i.e., 15 where n = 1.

(iii) 4 but not by 8.

Any number which follows the formula of 8n + 4 is an example of a number divisible by 4 but not by 8.

i.e., 28 where n = 1.

(iv) Both 4 and 8 but not by 32

Any number which follows the formula of 32n + 8 or 32n + 16 or 32n +24 is an example of a number divisible by both 4 and 8 but not by 32.

i.e., 48 where n = 1.

Answered by Aaryan | 1 year ago