Ques:- The perimeter of a semi circle is 144 cm then the radius is?
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Recent Answer :
: x=12;y=7
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Ques:- If the sum of five consecutive nos. 35? how many prime nos are there?
Recent Answer :
: Ans is 2(Prime numbers)
Sum of 5 consecutive nos is 35
so X + (X+1) + (X+2) + (X+3)+ (X+4) = 35
5X + 10 = 35
X = 5
So the 5 consecutive numbers are : 5, 6, 7, 8, 9
The Prime numbers are 5 and 7
Ques:- Varun’s expenditures and savings are in the ratio of 4 : 1. His income increases by 20%. If his savings increase by 12% by how much % should his expenditure increase?
A. 12%
B. 20%
C. 22%
D. 32%
Recent Answer :
: C. 22%
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Recent Answer :
: 1121221
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Recent Answer :
: 9
9/25
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Ques:- Find the greatest number which will divide 25, 73 and 97 so as to leave the same remainder in each case.
A. 12
B. 18
C. 24
D. 32
Recent Answer :
: required number =H.C.F of (73-25),(97-73) & (97-25)
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Ques:- The greatest number of four digits that have 144 for their HCF is?
Recent Answer :
: 9936
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Ques:- 1,2,10,37,- find the blank number
Recent Answer :
: 1+0^3=1
1+1^3=2
2+2^3=10
10+3^3=37
37+4^3=101
101+5^3=226
1,2,10,37,101,226……..
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Recent Answer :
: original cost is 100^2 / (100^2 – p^2) Rs
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Perimeter of semi circular = πr+2r
Where r is radius , π = 22/7
πr+2r= 144 (given)
(22/7)r +2r = 144
22r+14r = 144*7 (multiply both sides by 7)
36r = 144*7
r= 144*7/36 = 28
radius =28 cm
Area =( 1/2)πr^2
Area=( 1/2 )*(22/7)*28*28
= 1232cm^2
Ans : area is 1232 cm^2