New pattern based error detetction

Based on multiplication or division These questions have a pattern based on multiplication and division 1, 3, 9, 27, 81, ?

Based on multiplication or division These questions have a pattern based on multiplication and division 1296, 648, 216, ?, 36, 18, 6, 3

Based on addition/subtraction of squares of natural numbers These questions consist of a pattern based on addition /subtraction of squares of natural numbers 1, 2, 6, 15, 31, ?

Based on addition/subtraction of squares of natural numbers These questions consist of a pattern based on addition /subtraction of squares of natural numbers 71, 55, 46, 42, ?

New systematics based on genetic interrelationship is

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'. An Country's Central News Agency (1)/ said the launch was a (2)/ "muscle-flexing". (3)/ No Error (4)

New Pattern Of Coding|Questions (प्रश्न)|OMR