GMAT Club

# GMAT Question of the Day (Oct 15): Arithmetic and Critical Reasoning

- Oct 15, 02:00 AM Comments [0]

Math (PS)

What is the last digit of the following number $2^{22} * 3^{15} * 5^{16} * 7^1$ ?

(A) 6
(B) 5
(C) 2
(D) 1
(E) 0

____________________________________________________________________________________________________________________________________

Question Discussion & Explanation

GMAT Daily Deals
• Manhattan GMAT: 99 percentile teachers and superior curriculum at a more affordable price. Save @ GMAT Club. Save \$325!
• The Princeton Review teaches both material & testing strategies - not just the answers. Save \$350 @ GMAT Club. Learn More!

Verbal (CR)

Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.
Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.
Dr. A: The studies must have been faulty because the vaccine is worthless.

In which of the following is the reasoning most similar to that of Dr. A?

(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.
(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.
(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.
(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.
(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.

Question Discussion & Explanation

Like these questions? Get the GMAT Club question collection: online at GMAT Club OR on your Kindle OR on your iPhone/iPad

Browse all GMAT Questions of the Day

Subscribe to GMAT Question of the Day: E-mail | RSS