If \(a\) and \(b\) are positive integers, is \(10^a + b\) divisible by \(3?\)

This topic has expert replies
Legendary Member
Posts: 2898
Joined: Thu Sep 07, 2017 2:49 pm
Thanked: 6 times
Followed by:5 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

If \(a\) and \(b\) are positive integers, is \(10^a + b\) divisible by \(3?\)

(1) \(\dfrac{b}2\) is an odd integer.

(2) The remainder of \(\dfrac{b}{10}\) is \(b.\)

Answer: E

Source: GMAT Club Tests