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What will come in place of question mark...

What will come in place of question mark(?) in given number series.
63 65 61 69 53 ?

A

95

B

83

C

92

D

85

Text Solution

AI Generated Solution

The correct Answer is:
To solve the number series: 63, 65, 61, 69, 53, ?, we need to identify the pattern in the sequence. ### Step-by-Step Solution: 1. **Identify the first two numbers:** - Start with 63 and 65. - To get from 63 to 65, we add 2. - Calculation: \( 63 + 2 = 65 \) **Hint:** Look for the operation (addition or subtraction) between the numbers. 2. **Identify the next operation:** - Now, from 65 to 61, we subtract 4. - Calculation: \( 65 - 4 = 61 \) **Hint:** Alternate between addition and subtraction to find the next number. 3. **Continue the pattern:** - From 61 to 69, we add 8. - Calculation: \( 61 + 8 = 69 \) **Hint:** Keep track of the numbers you are adding or subtracting. 4. **Next operation:** - From 69 to 53, we subtract 16. - Calculation: \( 69 - 16 = 53 \) **Hint:** Notice the pattern in the numbers being added or subtracted. 5. **Identify the pattern in the operations:** - The operations are: +2, -4, +8, -16. - The numbers added or subtracted are powers of 2: \( 2^1, 2^2, 2^3, 2^4 \). 6. **Determine the next operation:** - Following the pattern, the next operation should be addition, and we will add \( 2^5 \) which is 32. - Calculation: \( 53 + 32 = 85 \) **Hint:** Recognize the pattern in the powers of 2 to predict the next number. 7. **Final answer:** - The value that comes in place of the question mark (?) is 85. ### Conclusion: The answer to the question is **85**.
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