exam Maths Puzzle Numerical Ability

according to the additoin property of equations, each side of an equation may have__________________.

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exam Other Question

Please help solve the following:



(6^3)(6^-4)

My thoughts are:
1. (6*6*6)X (-6*-6*-6*-6) = 72 x 372 = 26784

2. = 6^-12
How many terms are there in each of the following sequences?
a. 51,52,53,54,...,151
c. 10,20,30,40,...,2000
d. 9,13,17,21,25...,353
e. 1,2,4,8,16,32,...,1024