exam Maths Puzzle Numerical Ability

Please help! An electrical contractor's records during the last five weeks indicate the number of job requests:

week: 1 2 3 4 5
Request: 20 22 18 21 22

Predict

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exam Other Question

the sum of the digits of a two digit number is 12. if the digits are reversed the number is 15 more than twice the orignal number what is the original number? how did you get it? Evaluate 8.3 to the power of 5