Find the LCM of 30, 12, and 39.
Correct answer(s):
- 780
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Determine the GCD of 326 and 150 without using prime factor tables.
Correct answer(s):
- 2
Find 10% of 868.
Correct answer(s):
- 434/5
What is the remainder when 6826 is divided by 9?
Correct answer(s):
- 4
Evaluate 120^2 − 66^2 using an arithmetic identity.
Correct answer(s):
- 10044
Find the sum of the arithmetic sequence 43, 47, 51, …, 99.
Correct answer(s):
- 1065
What is the units digit of 2^489?
Correct answer(s):
- 2
Find the number of positive divisors of 90.
Correct answer(s):
- 12
Find the remainder when 6^114 is divided by 7.
Correct answer(s):
- 1
Find the LCM of 6, 16, and 37.
Correct answer(s):
- 1776
Determine the GCD of 410 and 150 without using prime factor tables.
Correct answer(s):
- 10
Find 10% of 387.
Correct answer(s):
- 387/10
What is the remainder when 5738 is divided by 12?
Correct answer(s):
- 2
Evaluate 60^2 − 42^2 using an arithmetic identity.
Correct answer(s):
- 1836
Find the sum of the arithmetic sequence 57, 66, 75, …, 318.
Correct answer(s):
- 5625
What is the units digit of 7^506?
Correct answer(s):
- 9
Find the remainder when 10^78 is divided by 17.
Correct answer(s):
- 8
Find the LCM of 27, 21, and 13.
Correct answer(s):
- 2457
Determine the GCD of 379 and 452 without using prime factor tables.
Correct answer(s):
- 1
Find 5% of 826.
Correct answer(s):
- 413/10