Eight books out of which 4 are part of a series and the

In a certain code language,

‘A + B’ means ‘A is the mother of B’;

‘A − B’ means ‘A is the brother of B’;

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.

32 * 14 * 18 * 9 * 12 * 22

If BEAR = YVZI, then BUILDING =

In a certain code language,

'heard their voice' is coded as 'nu ca es',

'their car was heard' is coded as 'hy ta es nu',

Select the wrong term in the given alpha-numeric series.

H25U, I30T, J35S, K40R, L45P 

1. OARIEST

2. OBELISE

3. OAFISHLY

4. OBIAS

5. OBEYER

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the odd letter-cluster.

Select the number from among the given options that can replace the question mark (?) in

        203, 199, 208, 192, 217, 181, ?

Statement:  Should robots replace astronauts in space missions?

Arguments: