The series is: 4, 27, 16, 125, 36, ?, 64, 729
Split into two alternate sequences:
First sequence (1st, 3rd, 5th, 7th numbers):
4, 16, 36, 64 — these are perfect squares (2², 4², 6², 8²)
Second sequence (2nd, 4th, 6th, 8th numbers):
27, 125, ?, 729 — these are perfect cubes (3³, 5³, ?, 9³)
So the missing number is 7³ = 343
श्रृंखला है: 4, 27, 16, 125, 36, ?, 64, 729
दो वैकल्पिक अनुक्रमों में विभाजित करें:
पहला अनुक्रम (पहला, तीसरा, पांचवां, सातवां अंक):
4, 16, 36, 64 — ये पूर्ण वर्ग हैं (2², 4², 6², 8²)
दूसरा अनुक्रम (दूसरा, चौथा, छठा, आठवां अंक):
27, 125, ?, 729 — ये पूर्ण घन हैं (3³, 5³, ?, 9³)
अतः लुप्त अंक 7³ = 343 है
Year-wise PYQs
