Question
Select the option in which the numbers are not related
in the same way as the numbers in the following set. (53, 16, 21)Solution
The logic followed here is: Product of both digits of the first number + Product of both digits of the second number = third number. (53, 16, 21) → (5 × 3) + (1 × 6) = (15 + 6) = 21 (82, 36, 34) → (8 × 2) + (3 × 6) = (16 + 18) = 34 (29, 83, 42) → (2 × 9) + (8 × 3) = (18 + 24) = 42 (47, 62, 40) → (4 × 7) + (6 × 2) = (28 + 12) = 40 (91, 45, 32) → (9 × 1) + (4 × 5) = (9 + 20) = 29 ≠ 32
- Suppose both the roots of q² + kq + 49 = 0 are real and equal, then determine the value of 'k'.
I. 84x² - 167x - 55 = 0
II. 247y² + 210y + 27 = 0
l). 2p² + 12p + 18 = 0
ll). 3q² + 13q + 12 = 0
I. 2x² - 9x + 10 = 0
II. 3y² + 11y + 6 = 0
I. 6x2 - 47x + 77 =0
II. 6y2 - 35y + 49 = 0
I. 12a2 – 55a + 63 = 0
II. 8b2 - 50 b + 77 = 0
...I. 2y2 – 19y + 35 = 0
II. 4x2 – 16x + 15 = 0
I. 5x² - 24 x + 28 = 0
II. 4y² - 8 y - 12= 0
In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer
I. x2 – ...
I.8(x+3)+ 8(-x)=72
II. 5(y+5)+ 5(-x)=150
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