Which of the following statement (s) is/are TRUE?
I. 4√3 > 3√4
II. 8√2 > 2√8
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Solve the following.
-4 - (-7 - 12 / 4) = ?
If Tan A = 15/8 and Tan B = 7/24, then Cos (A + B) = ?
A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
Let number of balls = (6 + 8) = 14.
Number of white balls = 8.
P (drawing a white ball) = 8 /14 = 4/7.
A sum of money lent at compound interest for 2 years at 20% per annum would fetch Rs.482 more, if the interest was payable half yearly than if it was payable annually . The sum is
Let sum=Rs.x
C.I. when compounded half yearly = x1+101004-x=464110000
C.I. when compounded annually =x201002-x=1125
464110000x-1125x=482
=> x=20000
On what dates of April, 2001 did Wednesday fall?
We shall find the day on 1st April, 2001.
1st April, 2001 = (2000 years + Period from 1.1.2001 to 1.4.2001)
Odd days in 1600 years = 0
Odd days in 400 years = 0
Jan. Feb. March April
(31 + 28 + 31 + 1) = 91 days 0 odd days.
Total number of odd days = (0 + 0 + 0) = 0
On 1st April, 2001 it was Sunday.
In April, 2001 Wednesday falls on 4th, 11th, 18th and 25th.
Odd man out of the series
90 72 56 42 36 20
The given number series is 90 72 56 42 36 20
9 x 10 = 90
8 x 9 = 72
7 x 8 = 56
6 x 7 = 42
5 x 6 = 30 (not 36)
4 x 5 = 20
Hence, the odd man in the given number series is 36.
Find out the wrong number in the following series:
5, 15, 30, 80, 180, 540, 1080
There should be 90 instead of 80so we can have a series5, 5x3, 15x2, 30x3, 90x2, 180x3, 540x2 and 1080x3 and so on...
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