In the following number series a wrong number is given. Find out the wrong number. 1, 3, 10, 21, 64, 129, 356, 777
The given pattern is, 2nd term → 1*2+1 = 3 3rd term → 3*3+1 = 10 4th term → 10*2+1 = 21 5th term → 21*3+1 = 64 6th term → 64*2+1 = 129 7th term → 129*3+1= 388 So, 7th term 356 is wrong and must be replaced by 388.
559 MCQ for effective preparation of the test of Addition Series of Logical Series section.
Read the MCQ statement: In the following number series a wrong number is given. Find out the wrong number. 1, 3, 10, 21, 64, 129, 356, 777 , keenly and apply the method you have learn through the video lessons for Addition Series to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 166-12149.