Book Maths Puzzle General Mental Ability

John likes 400 but not 300; he likes 100 but not 99; he likes 3600 but not 3700. Which does he like?
A:900
B:1000
C:1100
D:1200

Read Solution (Total 2)

may be 1200
10 years agoHelpfull: Yes(0) No(0)

b)1000
its like 100
10 years agoHelpfull: Yes(0) No(0)

Book Other Question

Let p be any positive prime. Prove that there is a prime q such that q is not equal to p and q divides p + 2. Vincent can read five pages in 15 minute. Which proportion can be used to figure out how long it will take him to read a 23-page pamphlet?
15 to 5 = 23 to X
5 to X = 15 t