CBSE BOARD XII, asked by abhinub94, 1 year ago

tell me the answer of all the parts plzzzzzz help me I will give the first answer brainlist

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Answered by Grimmjow
6

86. Given : 5 , 15 , 50 , 120 , 235 , 405 , ?

✿ The Difference between 5 and 15 is 10

✿ The Difference between 15 and 50 is 35

✿ The Difference between 50 and 120 is 70

✿ The Difference between 120 and 235 is 115

✿ The Difference between 235 and 405 is 170

The Inbuilt Series is 10 , 35 , 70 , 115 , 170 , X

✿ The Difference between 10 and 35 is 25

✿ The Difference between 35 and 70 is 35

✿ The Difference between 70 and 115 is 45

✿ The Difference between 115 and 170 is 55

⇒ The Difference between 170 and X should be 65

⇒ X - 170 = 65

⇒ X = 235

⇒ The Difference between 405 and ? should be 235

⇒ ? - 405 = 235

⇒ ? = 405 + 235

⇒ ? = 640

✿ Option (4) is the Answer

87. We know that : T is 20th Letter in the Alphabets

⇒ T = (20 + 1)² = 21² = 441

We know that : M is 13th Letter in the Alphabets

⇒ M = (13 + 1)² = 14² = 196

We know that : O is 15th Letter in the Alphabets

⇒ O = (15 + 1)² = 16² = 256

⇒ W is 23rd Letter in the Alphabets

⇒ W = (23 + 1)² = 24² = 576

✿ Option (3) is the Answer

88. We know that : 12³ = 1728

⇒ 12³ - 1 = 1727

We know that : 6³ = 216

⇒ 6³ - 1 = 215

We know that : 8³ = 512

⇒ 8³ - 1 = 511

We know that : 10³ = 1000

⇒ 10³ - 1 = 999

But the 2nd Option is 1001

✿ So, Option (2) is the Odd One Out

89. The Twelfth term from the Left is 8

The Seventh term to the Left of 8 is %

✿ Option (4) is the Answer

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