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वाक्य प्रयोग: जब दोस्त ने मुश्किल समय में आंखें फेर लीं, तो रमेश को बहुत बुरा लगा।
The present average age of X, Y, and Z is 45 years. 8 years ago, the average age of X and Y was 38 years. What is the present age of Z?
Of the four numbers, whose average is 75, the first is one-fourth of the sum of the last three. The first number is
Find the average of the following sets of numbers.
693, 456, 876, 532, 934, 691, 596, 398, 682