Veto q&a 7 Month22 (1)

@hang out
2018
May
Q
Find the area of an equilateral triangle having sides
is 8cm long?
Q
How many words can be formed by using all letters
of the world ‘BIHAR’?
Q
Area of an equilateral triangle
∴Area
3
x8x8 = 16 3 cm 2
4
Which is the least number which when doubled will
be exactly divisible by 12, 18, 21 and 30?
The LCM of 12, 18, 21, 30 = 1260
=
3 a
2
4
a) 80 b) 100 c) 600 d) none
ans: d) none
The word BIHAR contains 5 different letters
∴Required number of words
5
= P 5
=5! = (5x4x3x2x1)
= 120
Q
∴The required number = 1260/2 = 630
If the 11 th day of a month having 31 days is a Saturday,
which of the following days will occur five
times in that month?
a) Monday b) Saturday
c) Sunday d) Thursday
11 th day = Saturday
∴4 th day = Saturday
3 rd day = Friday
2 nd day = Thursday
∴Thursday’s in the month = 2, 9, 16, 23, 30
Q
Find the angle between the hour hand and the minute
hand of a clock when the time is 3:25?
0
0
a)
1
40 b) 90 0 c) 47 0 d)
1
47
2 2
0
1
ans: d) 47 2
Required angle = Hour x 30 - minute x 5.5
= 3 x 30 - 25 x 5.5
= 90 - 137.5
= -47.5
0
1
= 47 2
Q
324
64
1
2
1
2
= ?
1 1
a) 7/4 b) 7/8 c) 2 d) 2
4 8
1
2
324 324 18 2 1
= = = 2 = 2
1
8 8 4
2
64
64
Q The price of a table and a chair are in the ratio 4:1.
The cost of 2 tables and 8 chairs is Rs. 400, the
cost of a table is?
a) Rs.25 b) Rs.100
c) Rs.75 d) RS.1000
Let the price of table be 4x and chair x
Cost of 2 table became 8x
and cost of 8 chair will be 8x
given that, 8x +8x = 400
that is x = 400 ÷ 16 = 25
cost of table = 4x25 = 100
Q
Q
It was Sunday on January 1, 2006 what was the
day of the week on January 1, 2010?
a) Sunday b) Saturday
c) Friday d) Wednesday
ans: c) friday
On 31 st December, 2005 it was Saturday
Number of odd days from the year 2006 to the year
2009
= (1+1+2+1) = 5 days
On 31 st December, 2005 it was Thursday
Thus, on 1 st January, 2010 it is Friday
Find the HCF and LCM of 2/3, 8/9, 16/81 and
10/27?
HCF of 2, 8, 16, 10
HCF of given fractions = = 2/81
LCM of 3, 9, 81, 27
LCM of 2, 8, 16, 10
LCM of given fractions =
HCF of 3, 9, 81, 27
=80/3
Q Three different containers contain 496 litres 403
litres and 713 litres of mixture of milk and water
respectively. What biggest measure can measure
all the different quantities exactly?
Q&A Bonus
The first deemed University in Kerala - niT (chattamangalam)
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