Telangana SCERT Solution Class VIII (8) Math Chapter 15 Playing with Numbers Exercise 15.1
(1) Using divisibility rules, find which of the following numbers are divisible by 2,5,10 (say yes or no) in the given table. What do you observe?
Number | Divisible by 2 | Divisible by 5 | Divisible by 10 |
524 | YES | NO | NO |
1200 | |||
535 | |||
836 | |||
780 | |||
3005 | |||
4820 | |||
48630 |
(2) Using divisibility tests, determine which of the following numbers are divisible by 2
(a) 2144
(b) 1258
(c) 4336
(d) 633
(e) 1352
(3) Using divisibility tests, determine which of the following numbers are divisible by 5
(a) 438750
(b) 179015
(c) 125
(d) 639210
(e) 17852
(4) Using divisibility tests, determine which of the following numbers are divisible by 10:
(a) 54450
(b) 10800
(c) 7138965
(d) 7016930
(e) 10101010
(5) Write the number of factors for the following?
(a) 18
(b) 24
(c) 45
(d) 90
(e) 105
(6) Write any 5 numbers which are divisible by 2, 5 and 10.
(7) A number 34A is exactly divisible by 2 and leaves a remainder 1, when divided by 5, find A