There are four different bags. Also, there are four different coins. In how many ways can the coins be put into bags if there are exactly two coins in exactly one of the bags?

A starts some business with ₹ 50,000. After 3 months B joins him with ₹ 70,000. At the end of the year, in what ratio should they share the profit? 

Two hours after a goods train passed a station, another train travelling at a speed of 63 km / hr following goods train passed through that station, if after passing the station the train overtakes the goods train in 7 hours What is the speed of the goods train ? 

What approximate value should come in place of question mark.
(1814 .9  ÷  121) x 35.78 ÷ 45.1023 = ? 

QR is the chord of a circle with center o. p is a point on major arc QR as shown in figure. What is the value of ∠QPR + ∠OQR?

One certain Principal if the Simple interest for two years is Rs 2400 and Compound interest for the two years is Rs 2544, what is the rate of Interest? 

What is the angle of the angle between the clock needles at 2:30?

What time is shown by the mirror if the real-time is 9 : 27