Arithmetic
380-381+382-383...-409+410
What is 400?
If 24,6N8 is divisible by 9, what is the value of N?
What is N = 5?
lcm(18,66)
198
Two prime numbers have a sum of 30 and difference of 8. What is the product of the two numbers?
What is 209?
3(2\div4\times32-9)
What is 21?
B is a units digit in the four digit number 4,63B. If 4,63B is divisible by 3 and 4, then what is the value of B?
What is 2?
gcd(126,189)
63
How many prime numbers between 40-55?
What is 4?