NCERT Solutions
Class 6 Maths
Playing with Numbers

Ex. 3.3 Q.2
Using divisibility test, determine which of the following numbers are divisibly by 4; by 8:
(a) 572 (b) 726352 (c) 5500 (d) 6000 (e) 12159 (f) 14560 (g) 21084 (h) 31795072 (i) 1700 (j) 2150
(a) 572 ® Divisible by 4 as its last two digits are divisible by 4.
® Not divisible by 8 as its last three digits are not divisible by 8.
(b) 726352 ® Divisible by 4 as its last two digits are divisible by 4.
® Divisible by 8 as its last three digits are divisible by 8.
(c) 5500 ® Divisible by 4 as its last two digits are divisible by 4.
® Not divisible by 8 as its last three digits are not divisible by 8.
(d) 6000 ® Divisible by 4 as its last two digits are 0.
® Divisible by 8 as its last three digits are 0.
(e) 12159 ® Not divisible by 4 and 8 as it is an odd number.
(f) 14560 ® Divisible by 4 as its last two digits are divisible by 4.
® Divisible by 8 as its last three digits are divisible by 8.
(g) 21084 ® Divisible by 4 as its last two digits are divisible by 4.
® Not divisible by 8 as its last three digits are not divisible by 8.
(h) 31795072 ® Divisible by 4 as its last two digits are divisible by 4.
® Divisible by 8 as its last three digits are divisible by 8.
(i) 1700 ® Divisible by 4 as its last two digits are 0.
® Not divisible by 8 as its last three digits are not divisible by 8.
(j) 5500 ® Not divisible by 4 as its last two digits are not divisible by 4.
® Not divisible by 8 as its last three digits are not divisible by 8.