M4maths Maths Puzzle Numerical Ability Age Problem

In a colony 100 persons speak Hindi, 90 speak English, 80 speak Urdu, 40 speak Hindi and Urdu, 30 speak Urdu and English, 25 speak Hindi and English. If 10 person speak all the 3 language, than total person in the colony, who speak only one language

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M4maths Other Question

If k, k^2 and (2k+1) are in arithmetic progression then k-(1/2k) is? 17% of 17 + 18% of 18 = 19% of x
then x is lying in the range