Question
Study the following information carefully and answer
the given questions. 736 543 349 857 657 If 1 is subtracted from non-prime number digit within a number and 2 is added to the prime number digit within a number. Which of the following will be second last number if arranged in descending order?Solution
736 543 349 857 657 955 735 538 779 579 955 779 735 579 538
If a + b = 56 and (a – b)² = 496, find the value of the product of a and b.
In △ ABC, AB = AC. A circle drawn through B touches AC at D and intersect AB at P. If D is the midpoint of AC and AP = 2.5 cm, then AB is equal to:
1/3 + 1/15 + 1/35 + 1/63 + 1/99 = ?
If [8(x + y)3 – 27(x – y)3] ÷ (5y – x) = Ax2 + Bxy + Cy2, then the value of (A2 - 2B + 3C)...
A company’s expenditure on three departments over four years is as follows (in thousands):
If 10x2 – 6xy+y² – 4x+4= 0, then find the value of (3x+2y).
Find the 36th term of the series 25, 29, 33……
If √e + (1/√e) = 10, then find the value of e + (1/e).
- If n = 5 + √6, then find the value of (n + 1/n)².
- If (u + v) = 11 and uv = 24, then find the value of (u² + v²).
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