exam Maths Puzzle Numerical Ability

one angle of a triangle is 20 degrees. the second angles measurement is four times the third. what is the measure of the third angle?

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exam Other Question

DR MENTO HAS A CLASS OF 80 STUDENTS. FOR A GROUP PROJECT SHE WANTS TO DIVIDE THE STUDENTS INTO GROUPS OF 6, 8, 10. IS THIS POSSIBLE? EXPLAIN YOUR ANSWER. 2x - (4x + 3) < 6x + 3(x + 4)