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Refer to the following number series and answer the question that follows (all numbers are single-digit numbers only).

(Left) 5 6 3 8 1 4 7 9 2 5 8 3 7 4 6 1 9 2 8 3 7 4 (Right)

How many unique numbers in the series are prime numbers (each number counted only once, regardless of repetitions)?

Seven people, A, B, C, D, E, F and G, are sitting in a row, facing the north. Only 1 person sits to the left of E. Only 2 people sit between E and F. C sits immediately to the right of D. G sits immediately to the left of A. Only 1 person sits between F and D. How many people sit between A and E?

In a row of 25 people facing north, Ujwala is 5th from the right end. If Siya sits 3rd to the left of Ujwala, then what is Siya’s position from the left end of the row?

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

Statements:
Some batteries are torches.
All clocks are torches.

Conclusions:
(I) Some batteries are clocks.
(II) All torches are clocks.

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?

RV23, QU32, PT41, OS50, ?

O, P, Q, R, W, X and Y are sitting in a straight line facing north. No one sits to the left of P. Only four people sit between P and Q. Only three people sit to the right of Y. X sits to the immediate left of R. W is not an immediate neighbour of Y. Who sits third to the left of W?

In the following triads, each group of letters is related to the subsequent one following a certain logic. Select from the given options, the one that follows the same logic. MAID -

DAMI - AIMD
FOUR - ROFU - OUFR

In a certain code language, ‘wet pig kit’ is coded as ‘zp ww hz’ and ‘thing kit head’ is coded as ‘ww ym ce’. How is ‘kit’ coded in that language?

In a certain code language, ‘what a surprise’ is coded as ‘kd oc ip’ and ‘what is it’ is coded as ‘kd mp co’. How is ‘what’ coded in that language?

What should come in place of the question mark (?) in the given series?

74 65 55 44 32 ?