Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 34 * 4 * 15 * 51 * 27 * 9 * 40

Which letter-cluster will replace the question mark (?) to complete the given series?

HSDA, IZQT, ?, KNQF, LUDY

In a certain code language, 'BOSS’ is coded as '21967' and 'DEAL' is coded as '19192414'. How will 'GAIN' be coded in that language?

Which of the following numbers will replace the question mark (?) in the given series?
 23, 28, 280, 295, 5900, ?

Direction: Read the following information carefully and answer the given questions:

There are nine people A, B, C, D, E, F, G, H and I who all live in different cities such as Mumbai, Kolkata, and Jaipur but not necessarily in the same order. Not more than three people live in the same city and at least two people live in the same city. A neither live in Mumbai nor in Kolkata. D and G are friends but live in different cities but none of them lives in Jaipur. Either H or F lives in Kolkata. B and G live in the same city but it's not Mumbai. I, E and D are friends and the two of them live in the same city. E and H live in the same city but not Mumbai.

C lives in Mumbai along with?

Which of the following numbers will replace the question mark (?) in the given series?

2, 4, 10, 28, ?, 244

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 42 * 4 * 69 * 3 * 29 * 60 * 5

By interchanging the given two signs which of the following equation will be not correct?
 + and –