# Useful Tricks to Solve Number Series Questions – Download in PDF

Dear Aspirants, Here we have given the Aptitude Shortcut methods and tricks for Number Series Questions. Candidates those who are preparing for Bank PO/Clerk and all other competitive Exams can also download this in PDF.

Important Points to remember:
i). If numbers are inÂ ascending orderÂ in the number series.
Â·Â Â Â Â Â Â Â Â Â Numbers may beÂ added or multipliedÂ by certain numbers from the first number.
Â Â Â Â Â SET â€“ I:
Â Â Â Â Â Â Â Step 1Â : Check whether it is ascending , descending or mixed order.
Step 2Â : It isÂ  in ascending order. So add or multiply by certain numbers from the first number.
Step 3Â : The difference between first number and second, and difference between second and third and so on., are in increasing order of +4 and +3
Step 4: Hence the answer for above series is 37.
Step 1Â : Check whether it is ascending , descending or mixed order.
Step 2Â : It isÂ  in ascending order. So add or multiply by certain numbers from the first number.
Step 3Â : By addingÂ  first number and second, andÂ  second and third and so on., it is not in the sequence of increasing order. Try multiplication
Step 4: Take 1 and 3, letâ€™s start multiplying 1*3=3, by seeing this we get to know, by multiplying 3*4 it gives 12, and 12*5=60.
Step 4: Hence the answer for above series is 360.
ii). If numbers are inÂ descending orderÂ in the number series,
Â·Â Â Â Â Â Â Â Â Â numbers may beÂ subtracted or dividedÂ by certain numbers from the first number.
SET â€“ II :
Â Â Â Â Â Â Â Â Â Â Â Step 1Â : Find whether the given number is inÂ descendingÂ order.
Step 2Â : It is inÂ Â descendingÂ order . So subtract or divide by certain numbersÂ Â from the first number.
Â Step 3: The difference between first number and second, and difference between second and third and so on, are in order of -16,-8,-4,-2
Â Step 4: Hence the answer for above series is 3.
Step 1Â : Check whether it is ascending , descending or mixed order.
Step 2Â : It isÂ  in descending order. So subtract or divide by certain numbers from the first number.
Step 3Â : By dividingÂ  first number by 6 it gives 120.
Divide 120/ 5 =24, 24/4=6, 6/3=2, 2/2=1 .It is in decreasing order.
Step 4: Hence the answer for above series is 1.
iii). If numbers are in mixing order (increasing and decreasing) in the number series.
Â·Â Â Â Â Â Â Â Â Â Numbers may be in addition, subtraction, multiplication and division in the alternate numbers.
Step 1Â : Check whether it is ascending , descending or mixed order.
Step 2Â : It isÂ  in mixing order. So it may be in addition, subtraction, division and multiplication, squares and cubes.
Step 3Â : In above series it is mixing of square, addition and subtraction.
(14)2= 196+4= 200
(13)2=169. By adding 4 it gives 173. Try subtraction.
169-4=165
Here we found it is in order of squaring a number, adding by 4 and subtracting by 4.
Step 4: Hence the answer for above series is 77.
Step 1Â : Check whether it is ascending , descending or mixed order.
Step 2Â : It isÂ  in ascendingÂ  order. So add or multiply by certain numbers from the first number.
Step 3Â : In above series lets add first number with 3 i.e.,14+3= 17
But with second number we canâ€™t able to add +3 and so on.
Letâ€™s try adding first number and second number i.e. 14+17=31
Second and third, i.e. 17+31 =48 and so on
This series is in the form of miscellaneous
Step 4: Hence the answer for above series is 79

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