3 mar 2014
Here is an easy trick to find square root in just few seconds. Try it on your own.
Remember: Square of 1 and 9 end in 1
Square of 2 and 8 end in 4
Square of 3 and 7 end in 9
Square of 4 and 6 end in 6
Square of 5 end in 5.
Example: Find square root of 529
Step 1: 5, 29 (make pairs starting from units place)
Step 2: write 2 on tens place as its Square is 4 closest to 5.
Step 3: Multiply 2 by next higher digit 2×3 = 6 (as 5 < 6 so select smaller number whose square ends in 9 i.e 3)
Answer 23.
Similarly, square root of 6084 becomes 78.
23 feb 2014
Vedic maths multiplication trick
Here is an easy trick to make long multiplication in just 5 seconds.
Example 1: Calculate 99999999 × 99999999
Step 1: Observe the pattern 9 × 9 = 81
99 × 99 = 9801
999 × 999 = 998001
9999 × 9999 = 99980001
Answer :- 9999999800000001
Example 2: Calculate 12345679 × 81
Step 1: Observe the pattern
12345679 × 9 = 111111111
12345679 × 18 = 222222222
12345679 × 27 = 333333333
12345679 × 36 = 444444444
Answer = 999999999
Example 3: Calculate 666666666 × 666666667
Step 1: Observe the pattern
6×7 = 42
66 × 67 =4422
666 × 667 = 444222
6666 × 6667 = 44442222
Answer: 444444444222222222
10 feb 2014
Ratio proportion problem
The usal method of solving ratio proportion problems may be time consuming with the given trick, you can reduce your problem solving time.
Example:- In equal amounts of time three professors are able to solve problems in the ratio of 1.5 : 2.5 : 3.5, if the professor with the least capability can solve 6 problem in 2 hours, how many problems will the professor with highest ability solve in 3 hours? Assume that they solve problems with uniform speed.
A) 9 b) 10 c) 15 d) 21 e) 25
Step 1: The ratio of solving problems is 1.5 : 2.5 : 3.5 or 3 : 5 : 7, with 7 being the proportion of problems solved by the best professor.
Step 2: Thus the number of problems he solves should be a multiple of 7
Step 3: This condition is met by option 'd' alone.
Answed : d) 21.
Here is an easy trick to find square root in just few seconds. Try it on your own.
Remember: Square of 1 and 9 end in 1
Square of 2 and 8 end in 4
Square of 3 and 7 end in 9
Square of 4 and 6 end in 6
Square of 5 end in 5.
Example: Find square root of 529
Step 1: 5, 29 (make pairs starting from units place)
Step 2: write 2 on tens place as its Square is 4 closest to 5.
Step 3: Multiply 2 by next higher digit 2×3 = 6 (as 5 < 6 so select smaller number whose square ends in 9 i.e 3)
Answer 23.
Similarly, square root of 6084 becomes 78.
23 feb 2014
Vedic maths multiplication trick
Here is an easy trick to make long multiplication in just 5 seconds.
Example 1: Calculate 99999999 × 99999999
Step 1: Observe the pattern 9 × 9 = 81
99 × 99 = 9801
999 × 999 = 998001
9999 × 9999 = 99980001
Answer :- 9999999800000001
Example 2: Calculate 12345679 × 81
Step 1: Observe the pattern
12345679 × 9 = 111111111
12345679 × 18 = 222222222
12345679 × 27 = 333333333
12345679 × 36 = 444444444
Answer = 999999999
Example 3: Calculate 666666666 × 666666667
Step 1: Observe the pattern
6×7 = 42
66 × 67 =4422
666 × 667 = 444222
6666 × 6667 = 44442222
Answer: 444444444222222222
10 feb 2014
Ratio proportion problem
The usal method of solving ratio proportion problems may be time consuming with the given trick, you can reduce your problem solving time.
Example:- In equal amounts of time three professors are able to solve problems in the ratio of 1.5 : 2.5 : 3.5, if the professor with the least capability can solve 6 problem in 2 hours, how many problems will the professor with highest ability solve in 3 hours? Assume that they solve problems with uniform speed.
A) 9 b) 10 c) 15 d) 21 e) 25
Step 1: The ratio of solving problems is 1.5 : 2.5 : 3.5 or 3 : 5 : 7, with 7 being the proportion of problems solved by the best professor.
Step 2: Thus the number of problems he solves should be a multiple of 7
Step 3: This condition is met by option 'd' alone.
Answed : d) 21.
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