Question
Select the option that is related to the third number
in the same way as the second number is related to the first number and the sixth number is related to the fifth number. 42 : 16 :: 72 : ? :: 53 : 30Solution
The logic followed here is as follows: The product of the digits of the 1st number is multiplied by 2 to obtain the 2nd number. 42 : 16 → 4 x 2 = 8; 8 x 2 = 16 53 : 30 → 5 x 3 = 15; 15 x 2 = 30 Similarly, for the third and fourth numbers: 72 : ? → 7 x 2 = 14; 14 x 2 = 28
Simplify:
6x + 8y - [(12x + 6y) - (4x + 3y) + 2y] - 4xIf (x 4 Â + x 2 y 2 Â + y 4 ) = 216 and (x 2 Â - xy + y 2 ) = 12, then find the value ...
(√ (sec2 θ + cosec2 θ )) ((sinθ (1 + cosθ ))/(1 + cos&thet...
In â–³ 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:
If (4x + 3y): (28x - y) = 1: 5, then what is the value of (3x 2 Â + 4y 2 ): (7x 2 Â + 2y 2 )?
If (a + b) = 13 and ab = 18, find the value of (a² + b²).
A train can cross a pole, a bridge of 720 meter long and platform of 640 meter long in 9 seconds, _____ seconds and 25 seconds, respectively.
The...
What is the value of (a² + b²+4c²- ab-2bc-2ca) (a + b+2c):
If x + y = 12 and x² + y² = 74, find xy.
Solve:
x + y = 9
x - y = 3
Find x + 2y.
Relevant for Exams:
