Explanation

Let the numbers be a, b and c Then, a2 + b2 + c2 = 138 and (ab + bc + ca) = 131 (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca) = 138 + 2 x 131 = 400 ⇒ (a + b + c) = 400−−−√ = 20

Explanation

Let the ten's digit be x and unit's digit be y

Then, x + y = 15 and x - y = 3   or   y - x = 3

Solving x + y = 15   and   x - y = 3, we get: x = 9, y = 6

Solving x + y = 15   and   y - x = 3, we get: x = 6, y = 9

So, the number is either 96 or 69

Hence, the number cannot be determined.

Explanation

Who was the First Caliph?

Hazrat Abu Bakar was the first caliph after Holy Prophet.

Hazrat Abu Bakar remained Chalipha 8 June 632 – 23 August 634

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Who was the second Caliph?

Hazrat Umar(R.A.)

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Who was the Third Caliph of Islam?

 Hazrat Usman(R.A.)

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Who was the fourth Caliph?

 Hazrat Ali (R.A.)

Hazrat Ali(R.A.) Caliph period from 656 till 661 CE

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Which sahabi proposed the name of Hazrat Abu Bakr (R.A) for the first Caliphate of Islam?

Hazrat Umar (R.A)

Explanation

The Grand National Assembly of Turkey is the unicameral Turkish legislature.

It is the sole body given the legislative prerogatives by the Turkish Constitution.

It was founded in Ankara on 23 April 1920.

Explanation

Principal = Rs(100×540012×3)=Rs. 15000

The actual formula is (interest of 3 years*100)/(month in a year*total years).

5400*100 we will get 540000 12*3 we will get 36 540000/36=15000

Explanation

Let the sum be Rs. 100. Then, S.I. for first 6 months = Rs. ( 100 X 10 X 1/100 X 2 ) = Rs. 5. S.I. for last 6 months = Rs. ( 105 X 10 X 1/100 X 2 ) = Rs. 5.25. So, amount at the end of 1 year=Rs.(100 + 5 + 5.25) = Rs. 110.25 Effective rate = (110.25 – 100) = 10.25%.

Explanation

Speed=45×518m/sec=252m/sec Total distance to be covered= 360+140)m=500mFormulaforfindingTime=Distance Speed∴Required time=(500×225)sec=40sec.

Explanation

360 = 40x

x = 9 days

Explanation

Total number of votes = 7500

Given that 20% of Percentage votes were invalid

 => Valid votes = 80%

 Total valid votes = 7500*(80/100)

1st candidate got 55% of the total valid votes.

Hence the 2nd candidate should have got 45% of the total valid votes

=> Valid votes that 2nd candidate got = total valid votes x (45/100)

7500*(80/100)*(45/100) = 2700

Explanation