Question
Identify the number that, when subtracted by its square
root, results in a difference of 42.Solution
Let the number be 'x'. So, x - 42 = √x On, squaring both sides, we have; (x - 42) 2 = (√x) 2 Or, x2 + 1764 - 84x = x Or, x2 - 85x + 1764 = 0 Or, x2 - 36x - 49x + 1764 = 0 Or, x(x - 36) - 49(x - 36) = 0 Or, (x - 49) (x - 36) = 0 So, x = 49 or x = 36 We can see that 'x' = 36 will not satisfy the equation, so x = 49 Hence, option d.
Select a suitable figure from the Answer Figures that would replace the question mark (?) from question figure.
Select the option that is related to the third number in the same way as the second number is related to the first number.
64 : 224 :: 98 : ?
If 47 # 56 = 159 and 28 # 38 = 104, then 35 # 49 = ?
In the following question, select the related word from the given alternatives.
Shirt : Cloth : : Bus : ?
WORD : 3584 :: PLAN : 6214 :: CODE : ?
Who sits adjacent to S?
Hard : Stone :: Soft : ?
34 is related to 155 by certain logic. Following the same logic, 49 is related to 168. To which of the following is 68 related, following the same logic?
Read the given statement and conclusions carefully. Decide which of the given conclusions is/are definitely true from the statement.
Statement: V...
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
F S_ Y Z _ _ N _Z F _ _ Y Z
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