Question
If 2 is added to all the odd place digits and 1 is
subtracted from all even place digits (from the left end) in ‘634715247’ and then all the digits are arranged in descending order from left to right. Which is the seventh digit from the left end after the rearrangement? ( Note : Here, place value of ‘6’ is 1, place value of ‘3’ is 2, place value of ‘4’ is 3, and so on).Solution
6 3 4 7 1 5 2 4 7 8 2 6 6 3 4 4 3 9 9 8 6 6 4 4 3 3 2 3 is the seventh digit from the left end.
Simplify:
6x + 8y - [(12x + 6y) - (4x + 3y) + 2y] - 4xIf 9x2 + 16y2 = 24xy, then find the ratio of ‘x’ and ‘y’, respectively.
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If, 6x + y = 20, and 2xy = 32, and 6x > y, then find the value of 216x³ – y³.
If x + 1/x = 2, find x⁷ + 1/x⁷.
(x – 6) 2 + (y + 2) 2 + (z – 4) 2 = 0, then find the value of 4x - 3y + z.
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