Aptitude Shortcuts

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Aptitude Shortcuts

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Addition is one of the four basic operations of arithmetic, with the others being subtraction, multiplication and division. The addition of two whole numbers is the total…

Aptitude Shortcuts

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Aptitude Shortcuts

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Multiplication of whole numbers is equivalent to a repeated addition; that is, the multiplication of two numbers is equivalent to adding as many copies of one of them,…

Aptitude Shortcuts

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Aptitude Shortcuts

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Shortcut 99: nCr=n!/[r!(n-r)!] Question: In how many ways 2 shirts and 3 pants can be selected from 5 shirts and 7 pants? Answer: Selecting 2 shirts…

Aptitude Shortcuts

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Aptitude Shortcuts

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Shortcut 95: Repeated elements n!/(a!*b!) Question: In how many ways the letters of the word “ENVIRONMENT” can be arranged? Answer: n = 11 Let, a =…

Aptitude Shortcuts

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Aptitude Shortcuts

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Shortcut 91: Events Dependent=multiplication Independent =addition Question: There 3 busses from city A to city B and there are 5 busses from city B to…

Aptitude Shortcuts

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Aptitude Shortcuts

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Shortcut 87: Using the odd days Question: Find the day of birth of MS Dhoni (7 July, 1981), if 31 Dec 1999 is Friday Answer: Days…

Aptitude Shortcuts

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Aptitude Shortcuts

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Shortcut 85: Using tanƟ Ɵ tan 0 0 30 [latex]1/\sqrt3 [/latex] 45 1 60 [latex] \sqrt3[/latex] 90 …

Aptitude Shortcuts

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Aptitude Shortcuts

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Shortcut 82: Maximum number of items per group Take HCF Question: There are 40, 45 and 50 balls in three different colors. They have to be…

Aptitude Shortcuts

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Aptitude Shortcuts

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Shortcut 77: Divisibility test Divisibleby Rule 2 Last digit of a number should be 0,2,4,6, or 8 3 Sum of the digit should be divisible by 3…

Aptitude Shortcuts

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Aptitude Shortcuts

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Shortcut 75: Simple interest [latex]SI=\frac{PNR}{100}[/latex] P = Principle amount invested or borrowed R = Rate of interest per term N = Number of terms Term = duration…