अनुक्रम 20, 10, 10, 15, 30, 75, X में X का मान क्या है?

20223Mprelimsupscyear-2022p2quantitative-aptitudequantitative-abilitysequence-and-series
A.105
B.120
C.150
D.225सही
व्याख्या एवं हल

सही उत्तर: (D) 225

शृंखला के पदों में 0.5 की वृद्धि से गुणा का क्रम है: 20×0.5=1020 ×\times 0.5 = 10, 10×1.0=1010 ×\times 1.0 = 10, 10×1.5=1510 ×\times 1.5 = 15, 15×2.0=3015 ×\times 2.0 = 30, 30×2.5=7530 ×\times 2.5 = 75। अतः अगला पद X=75×3.0=225X = 75 ×\times 3.0 = 225 होगा।

In English (Question & Model Answer)

What is the value of X in the sequence 20, 10, 10, 15, 30, 75, X?

A.105
B.120
C.150
D.225Correct

Correct Answer: (D) 225

The pattern of multiplication between consecutive terms is progressively increasing by 0.5: 20×0.5=1020 ×\times 0.5 = 10, 10×1.0=1010 ×\times 1.0 = 10, 10×1.5=1510 ×\times 1.5 = 15, 15×2.0=3015 ×\times 2.0 = 30, 30×2.5=7530 ×\times 2.5 = 75. Therefore, the next term is X=75×3.0=225X = 75 ×\times 3.0 = 225.

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