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Direction : What will come in place of the question mark (?) in the following number series?
?, 426, 399, 463, 338, 554
  • a)
    416
  • b)
    419
  • c)
    418
  • d)
    420
  • e)
    415
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Direction : What will come in place of the question mark (?) in the f...
The pattern is
418+23 = 426
426-33 = 399
399+43 = 463
463-53 = 338
388+63 = 554
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Most Upvoted Answer
Direction : What will come in place of the question mark (?) in the f...
Take first number as 'x'
by observing remaining numbers we can get,
426-399 = 27 = 3×3×3
399-463= -64=-(4×4×4)
463-338 = 125 = 5×5×5
338-554=-(6×6×6)

positive and negatives are coming one after one so,
x-426 =-(2×2×2)
then x = 418
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Community Answer
Direction : What will come in place of the question mark (?) in the f...
?, 426,399,463,338,554
option == C

=the difference between the numbers
=425 399 463 338 554
= 27 64 125 216
= I.e..cuberoot of 27 is 3
cube root of 64 is 4
cube root of 125 is 5
cube root of 216 is 6
then difference betn? and 426 is 8 and its cube root is 2
hence 426 - 8= 418
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Direction : What will come in place of the question mark (?) in the following number series??, 426, 399, 463, 338, 554a)416b)419c)418d)420e)415Correct answer is option 'C'. Can you explain this answer?
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