Question
A can complete a work in 15 days, and B can complete the
same work in 20 days. If they work together for 6 days, what fraction of the work is left?Solution
Work done by A in 1 day = 1/15 Work done by B in 1 day = 1/20 Work done by A and B together in 1 day = (1/15 + 1/20) = 7/60 Work done in 6 days = 6 × 7/60 = 7/10 Fraction of work left = 1 - 7/10 = 3/10 Correct answer: d
Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.
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Select the triad in which the numbers are related to each other in the same way as the numbers in the following triads.
8-17-35
23-47-95
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
( NOTE : Operations should be perform...
Find the missing term in the following series.
AD25, CE64, EF121, GG196, ______

GPK : MSI : : RHT : VKT :: IDW : ?
Select the set of classes the relationship among which is best illustrated by the following Venn diagram.
Of the following two statements, both of which cannot be true, both can also be false. Which are these two statements?
I. All machines make noise...
'P + Q' means 'P is the daughter of Q'
'P × Q' means 'P is the son of Q'
'P – Q' means 'P is the wife of Q'
Which of the followi...
Select the option that represents the letters which, when sequentially placed from left to right in the blanks below, will complete the letter series.