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Grade 8 - Mathematics
5.23 Number Theory Review Test
: If A and B are two natural numbers and L and G are their L.C.M. and G.C.D. then relation between these four is A*B = L*G. (True/False)
: If a and b are co-primes their G.C.D. = ____.
: Every composite number has ___ factors.
At least 3
: The number of factors of 72 is _____.
: The sum of the first 10 odd numbers is ____.
: If p and q are two numbers and r is G.C.D. then L.C.M. = (p.q/r).(True/False)
: G.C.D. means greatest common divisor. (True/False)
: 2,4,6,8,.... are divided by 2 then the remainder is _____.
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