Radius of a circle is 5 cm. Length of chord AB in this circle is 6 cm. What is the distance of this chord from the centre of the circle?

If Anju is 30% more efficient than Bitt, then how much time will they take, working together, to complete a job which Anju alone could have done in 23 days?

The HCF of two numbers is 21 and their LCM is 840. If one of the numbers is 49, then the other number is:

A boat moves 25km upstream and 39km downstream in 8 hours. It travels 35km upstream and 52km downstream in 11 hours. What is the speed of the stream if it travels at a uniform speed?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
 NMQR, NQYD, NUGP, NYOB, ?

Which of the following numbers will replace the question mark (?) in the given series?
 4, 6, 12, 14, 28, 30, ?

Select the option that is related to the fourth term in the same way as the first term is related to the second term and the fifth term is related to the sixth term.
 35 : 21 :: ? : 36 :: 40 : 24

A @ B means ‘A is the sister of B’.
 A & B means ‘A is the brother of B’.
 A # B means ‘A is the wife of B’.
 A ^ B means ‘A is the mother of B’
 A + B means ‘A is the father of B’.
 If A + G & I + R @ S @ T # U & V, then which of the following statements is NOT correct?