Subject :IMO Class : Class 5
Aisha wrote the first four whole numbers that are factors of 140. Which list shows these factors ?
(a) 1, 2, 3, 4
(b) 1, 2, 4, 5
(c) 1, 2, 5, 10
(d) 140, 280, 420, 560
Ans 1:
Class : Class 8
the answer is c not b because 1*140=140,2*70=140,5*28=140,10*14=140
Ans 2:
Class : Class 5
b is the answer