Find the LCM of 39, 38, and 32.
Correct answer(s):
- 23712
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Determine the GCD of 450 and 366 without using prime factor tables.
Correct answer(s):
- 6
Find 30% of 220.
Correct answer(s):
- 66
Reduce the fraction 40/66 to lowest terms.
Correct answer(s):
- 20/33
What is the remainder when 2050 is divided by 6?
Correct answer(s):
- 4
Evaluate 144^2 − 18^2 using an arithmetic identity.
Correct answer(s):
- 20412
Find the sum of the arithmetic sequence 36, 44, 52, …, 228.
Correct answer(s):
- 3300
How many integers from 1 to 96 are coprime to 96?
Correct answer(s):
- 32
What is the units digit of 13^234?
Correct answer(s):
- 9
Find the number of positive divisors of 108.
Correct answer(s):
- 12
Find the remainder when 8^83 is divided by 7.
Correct answer(s):
- 1
Find the LCM of 12, 8, and 42.
Correct answer(s):
- 168
Determine the GCD of 333 and 319 without using prime factor tables.
Correct answer(s):
- 1
Find 25% of 607.
Correct answer(s):
- 607/4
Reduce the fraction 12/90 to lowest terms.
Correct answer(s):
- 2/15
What is the remainder when 3333 is divided by 8?
Correct answer(s):
- 5
Evaluate 96^2 − 42^2 using an arithmetic identity.
Correct answer(s):
- 7452
Find the sum of the arithmetic sequence 28, 32, 36, …, 140.
Correct answer(s):
- 2436
How many integers from 1 to 84 are coprime to 84?
Correct answer(s):
- 24
What is the units digit of 8^144?
Correct answer(s):
- 6