Which chemical is used to stimulate latex production in

In a certain code language, 'BEST' is coded as '9715' and 'CLUB' is coded as '8762'.

What is the code for 'B' in the given code language?

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

BCE, GHJ, LMO, QRT, ?

In a certain code language, 'BOXER' is written as '251224229'. How will 'PULLY' be written in that language?

Five to four in the following are similar in a certain way, which create a group. 

Which of these is not related to this group? 

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

(12, 30, 204)

By interchanging the given two signs which of the following equation will be correct? 

× and ÷ 

I. 5 + 6 × 2 – 4 ÷ 1 = 10 

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

EBD, JGI, ?, TQS, YVX

In a race, Gary ran faster than Jai. Neil ran faster than Jai. Sam ran slower than Gary. Who came first in the race?