Exercise 3.3
1. Using divisibility tests, determine which of the following numbers are divisible by 4; by 8:
(a) 572 (b) 726352 (c) 5500 (d) 6000 (e) 12159
(f) 14560 (g) 21084 (h) 31795072 (i) 1700 (j) 2150
2. Using divisibility tests, determine which of following numbers are divisible by 6:
(a) 297144 (b) 1258 (c) 4335 (d) 61233 (e) 901352
(f) 438750 (g) 1790184 (h) 12583 (i) 639210 (j) 17852
3. Using divisibility tests, determine which of the following numbers are divisible by 11:
(a) 5445 (b) 10824 (c) 7138965 (d) 70169308 (e) 10000001 (f) 901153
4. Write the smallest digit and the greatest digit in the blank space of each of the following numbers so that the number formed is divisible by 3 :
(a) __ 6724
(b) 4765 __ 2
Show Answer:
1. Using divisibility tests, determine which of the following numbers are divisible by 4; by 8:
Divisible by 4 : (a) , (b), (c), (d), (f), (g), (h), (i)
Divisible by 8 : (b), (d), (f), (h) 3. (a), (f), (g), (i)
2. Using divisibility tests, determine which of following numbers are divisible by 6:
(a), (b), (d), (e), (f)
3. Using divisibility tests, determine which of the following numbers are divisible by 11:
(a) 2 and 8 (b) 0 and 9
4. Write the smallest digit and the greatest digit in the blank space of each of the following numbers so that the number formed is divisible by 3 :
(a) 8 (b) 6
