What is the units digit of 9^538?
Correct answer(s):
- 1
Subject
Mathematics
Practice related MCQ quizzes and improve step by step.
Practice by Education Level
Subtopics under Mathematics
Quizzes in Mathematics
Find the number of positive divisors of 216.
Correct answer(s):
- 16
Find the remainder when 4^78 is divided by 13.
Correct answer(s):
- 1
Find the LCM of 34, 19, and 36.
Correct answer(s):
- 11628
Determine the GCD of 495 and 387 without using prime factor tables.
Correct answer(s):
- 9
Find 20% of 721.
Correct answer(s):
- 721/5
Reduce the fraction 28/84 to lowest terms.
Correct answer(s):
- 1/3
What is the remainder when 7887 is divided by 3?
Correct answer(s):
- 0
Evaluate 108^2 − 18^2 using an arithmetic identity.
Correct answer(s):
- 11340
Find the sum of the arithmetic sequence 28, 30, 32, …, 66.
Correct answer(s):
- 940
What is the units digit of 17^361?
Correct answer(s):
- 7
Calculate the number of trailing zeros in 130!.
Correct answer(s):
- 32
Find the remainder when 2^143 is divided by 23.
Correct answer(s):
- 1
Find the LCM of 37, 43, and 6.
Correct answer(s):
- 9546
Determine the GCD of 364 and 417 without using prime factor tables.
Correct answer(s):
- 1
Find 25% of 632.
Correct answer(s):
- 158
Reduce the fraction 18/44 to lowest terms.
Correct answer(s):
- 9/22
What is the remainder when 8333 is divided by 4?
Correct answer(s):
- 1
Find the sum of the arithmetic sequence 45, 49, 53, …, 157.
Correct answer(s):
- 2929
How many integers from 1 to 78 are coprime to 78?
Correct answer(s):
- 24