Which two signs should be interchanged to make the given equation correct?
( 72 ÷ 18) + 30×8 -4 =20

How many such pairs of letters are there in the word EFFICIENCY each of which has as many letters between them in the word as there are between them in the English alphabet?

Direction: Six friends Prem, Qazi, Ritvik, Sunny, Tinu and Utkarsh are sitting around the hexagonal table each at one comer and are facing the centre of the hexagonal. Prem is second to the left of Utkarsh. Qazi is neighbour of Ritvik and Sunny. Tinu is second to the left of Sunny.

Who of the following are the neighbors of Prem?

A series is given with one term missing. Choose the correct option from the given ones that will complete the series.

5 : 7 : 9 : 11 : 13 : 15 :?

Select the option that correctly fills in the blanks and complete the series.
441, 484, 529, 576, __

Choose the one which is different or odd form the following.

Direction: Study the following arrangement carefully and answer the questions given below.
C 3 # R A T 1 E J $ K @ F U 5 4 V I 6 © D 8 * H N 7 δ 2 W

How many such symbols are three in the above arrangement, each of which is immediately preceded by a number and immediately followed by a letter?

2, 65, 7, 59, 12, 53, ?, ?