In the following number series, only one number is ‘‘wrong’’. Find out the ‘’wrong’’ number.
13, 15, 17, 18, 21, 23
3.5, 4, 14, 56, 782, 43904
128, 640, 981, 1199, 1324, 1388
12, 114, 600, 2428, 7272, 14550
828, 424, 220, 116, 64, 33
Study the given table carefully to answer the question that follow:
percentage of marks obtained by five students in five different subjects in a school

What is the average marks obtained by all the students together in English ?
What is varun’s overall percentage in the examination ?
What is the ratio of the total marks obtained by Veena and Shreya together in Mathematics to the marks obtained by Rahul in the same subject ?
If in order to pass the exam a minimum of 95 marks is needed in Science how many students pass the exam ?
What is the total marks obtained by Soham in all the subjects together ?