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Maths Puzzle
Numerical Ability
a trinangle has a 121 angle and a 5 degree angle . what is the measure of the 3rd angle?
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book Other Question
If the tens digit x and the units digit y of a positive integer n are reversed, the resulting integer is 9 more than n. What is y in terms of x ?
(A) 10 - x
(B) 9 - x
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The length and width of a rectangle are consecutive even intergers, and the length is lcm. Find (a) area and (b) perimeter of the rectangle.