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തുടർച്ചയായി നാല് ഇരട്ട സംഖ്യകളുണ്ട്, അതായത് അവസാനത്തേയും ആദ്യത്തേയും സംഖ്യകളുടെ ശരാശരി 11 ആണ്, രണ്ടാമത്തെയും മൂന്നാമത്തെയും സംഖ്യകൾ തമ്മിലുള്ള തുക എന്താണ്?

A20

B22

C24

D18

Answer:

B. 22

Read Explanation:

സംഖ്യകൾ 2x, (2x + 2), (2x + 4), (2x + 6) എന്നിവ ആയിരിക്കട്ടെ അവസാനത്തേയും ആദ്യത്തേയും സംഖ്യകളുടെ ശരാശരി 11 ആണ്. (2x + 2x + 6)/2 = 11 4x + 6 = 22 4x = 16 x = 4 അതിനാൽ സംഖ്യകൾ 8, 10, 12, 14 എന്നിവയാണ് രണ്ടാമത്തെയും മൂന്നാമത്തെയും സംഖ്യകൾ = 12 + 10 = 22


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