Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
AAI, AEI, AII, AOI, ?

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
 33 * 4 * 15 * 3 * 61 = 188

Which two signs and two numbers should be interchanged in the following equation to make it correct?
 14 × 6 ÷ 12 + 15 − 9 = 203

Select the correct combination of mathematical signs to replace the * signs and balance the given equation.
66 * 6 * 12 * 3 * 15 = 12

Study the given pattern carefully and select the number that can replace the question mark (?) in it.
 First row- 9, 21, 124
 Second row- 11, 25, 148
 Third row- 17, ?, 220
 (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding /deleting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed)

Select the related word/letters/number from the given alternatives.

96 : 32:: 48 : ?

After interchanging which two signs will the value of the given expression be ‘356’?

133 + 49 – 16 ÷ 2 × 34

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