What is produced during the oxidation of pyruvate before

If ÷ means −, − means ×, × means +, + means ÷, what will come in place of the question mark (?)?

77 ÷ 7 × 17 – 49 + 7 = ?

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

Select the correct option to complete the following analogy.

Rabbit : Hop :: Duck : ?

Two positions of a cube are shown. What will come opposite to the face showing ‘@’?

Select the number triad that is analogous to the given triads.

(64, 8, 65), (125, 27, 89)

Refer to the given number, symbol series and answer the question that follows.

(Left) 3* @ 5% 3 + = 3 3% 8 7 & 5 $ 7 5 & # * 8 2 @ 5 (Right)

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

8, 18, 38, 78, 158, ? 

After interchanging the given two signs what will be the values of equation (I) and (II) respectively?

 × and ÷ 

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