Prime Numbers
What are the first 5 prime numbers ?
2,3,5,7 and 11
What is the 9th triangular number ?
45
What is the equation for the 6th square number ?
6 times 6 is 36
What are the first 3 rectangular numbers?
2,6 and 12
How much digits in a number do you need to make a palindrome?
2 digits or more .
How many prime numbers are in the 40s ? What are they ?
3
What are triangular numbers are 4th - 8th ?
10 ,15,21,28,36
What is the 4th square number ?
16
What are the first 4 rectangular numbers ?
2,6,12 and 20
Can palindromes be something beside numbers ? If so what ?
Palindromes can be words or phrases that can be read backwards?
What is the smallest prime number that you can find is the sum of 3 prime numbers .
7
What is the 6th triangular number subtracted by the 5th ?
6
What simple method can you use to find a square number ?
Times the number by itself
What is the 8th rectangular number ?
72
What are palindromes?(in numbers )
Palindromes are numbers that can be read the same backwards or forwards
What are prime pairs ?
Prime pairs are prime numbers that differ by 2 .
Why are they called triangular numbers?
Because they can be expressed graphically with triangular arrangements.
What is the 4th through 9th square numbers ?
16 , 25 , 36 , 49 , 64 , 81
What are the first 5 equations for the first 5 rectangular numbers ?
2 times 1 , 2 times 3 , 3 times 4 , 4 times 5 , 5 times 6
Is the answer to 5871 plus 1785 a palindrome ? True or false ?
True
How many prime numbers are there ?
25
`What position is 78 in?
12th
What is the 9th square number plus the 7th minus the 5th?
105
What are the first ten rectangular numbers ?
2 , 6 ,12
Is the answer to 7,536 plus 6,357 a palindrome ? True or false ?
False