Verbal Reasoning - Mental Ability Questions

The pattern is x1+3, x 2, x1+3, x 3, x1+3, x 4

The next number=60x4=240

The given series follows the pattern that

So the missing number is  37 + 38 = 75

75 + 66 = 141

....

According to question: S=U, T=V, U=W, D=F, E=G, N=P, T=V

Seismography is an instrument to measure the intensity of an earthquake.

Similarly, taseometer is an instrument to measure strains.

Here it can be seen that it is not a continuous series.

so take alternative terms.

CGE, FJH, IMK and RNP, OKM,__

Between R and O there is a gap of two letters. so the first letter in the answer is L.Proceding like this the answer is LHJ