What is the value of (2 - tan60°) ?
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Given that (a2 + b2) = 60, then find the value of (a + b)2 + (a - b)2 ?
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
In the following question, select the odd word pair from the given alternatives.
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.
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.
Find the unit place digit in the given expression.
153144 - 115123 - 111510 + 21625
Find the missing number in the given number series?
2676, 445, ?, 21,6, 2, 1
The given number series 2676, 445, ?, 21,6, 2, 1 follows a pattern that,
From right side,
1
1 x 1 + 1 = 2
2 x 2 + 2 = 6
6 x 3 + 3 = 21
21 x 4 + 4 = 88
88 x 5 + 5 = 445
445 x 6 + 6 = 2676
Hence the missing number in the given number series is 88.
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