CGL 22 : 13-12-2022 Shift 4

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CGL 22 : 13-12-2022 Shift 4

Question 1

If a + b + c = 5, a³ + b³ + c³ = 85 and abc = 25, then find the value of a² + b² + c² - ab - bc - ca.

यदि a + b + c = 5, a³ + b³ + c³ = 85 और abc = 25 है, तो a² + b² + c² - ab - bc - ca का मान ज्ञात कीजिए।

Options

A

2

B

4

C

8

D

6

Solution:

Correct Answer:

A

2

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