Question
The present age ratio of Arjun to
Virat is 2:z. In 6 years from now, their total ages will be 42 years. Eight years ago, Rahul was 3 years older than Virat and his age at that time was 15 years. What is the value of (z + 3)(z + 7)?Solution
ATQ,
Present age of Rahul = 15 + 8 = 23 years Present age of Virat = 23 - 3 = 20 years So, present age of Arjun = 42 - 20 - 6 - 6 = 10 years Ratio of present ages of Arjun and Virat = 10:20 = 1:2 So, z = 2 Therefore, required value = (2 + 3) × (2 + 7) = 5 × 9 = 45
Which two signs should be interchanged to make the given equation correct?
312 – 13 × 14 + 207 ÷ 4 = 539
Statements: All people are tall. Some tall are buildings. No buildings are clocks.
Conclusion I: Some people are buildings.
Conclusion II:...
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which th...
Select the figure from among the given options that can replace the question mark (?) in the following series.
Select the next number in the series.
61, 63, 66, 71, 78,?
A piece of paper is folded and punched as shown below. From the given responses indicate how it will appear when opened.
How is Kannan's father's only son's daughter related to Kannan's wife?
If A denotes ‘+’, B denotes ‘×’, C denotes ‘−’, and D denotes ‘÷’, then what will come in place of ‘?’ in the following equation...
In the following question, select the figure which can be placed at the sign of question mark (?) from the given alternatives.
There is a group of donkeys & ostriches, where the number of legs are 8 more than twice the number of tails. Find the number of donkeys in the group.
Relevant for Exams:
