exam Maths Puzzle Numerical Ability

three times a number increades 5 times another number is 49 but twice the second number exceeds 5 times the first number by 1.what are the numbers?

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exam Other Question

5) Suppose that the function P=11+44 ln x represents the percentage of inbound e-mail in the U.S. that is considered spam, where x is the number of years after 2002.

Carry al
find the value of:
sin (-pi over 6)