Krishna Janmashtami Mega Sale (24-26 Aug) 🪈😍 CAT courses at just ₹ 1199 onwards. Enroll now
Edit MetaData
Which one of the following will completely divide $$5^{71} + 5^{72} + 5^{73}$$ ?
150
160
155
30
Expression : $$5^{71} + 5^{72} + 5^{73}$$
= $$5^{71} (1 + 5 + 5^2) = 5^{71} \times 31$$
= $$5^{70} \times 155$$
Clearly, above expression is easily divisible by 155.
=> Ans - (C)
Create a FREE account and get:
Login to your Cracku account.
Enter Valid Email
Follow us on
Incase of any issue contact support@cracku.in
Boost your Prep!
Quick, Easy and Effective Revision
By proceeding you agree to create your account
Free CAT Formulae PDF will be sent to your email address soon !!!
Join cracku.in for Expert Guidance.