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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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If 24/n= Q+4 then what is the property of n |
Upon simplifying the given equation we get nQ= to 20. Now reminder 4 is always less than the divisor n. So n>4. |
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k can have how many prime factor? |
50k has two prime factor that doesn't mean that k has exactly two prime factor. The range of factor will be 0<k<=2 |
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An integer and perfect square |
If an integer has odd number of factors then it must be perfect square. |
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How to check prime number of an odd number>33 ? |
Check divisibility with the prime numbers till the square root of that number ✓33= 5.75 or check with 2,3,5 (3,5 as per question.) |
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Y<33 is an odd number. Is it prime? |
✓33=5.75 so prime number below 5.75 is equal to 2 3 and 5. But check divisibility by only 3 and 5 as Y is an odd number. |
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Relationship between slope and Y intercept |
Slope and Y intercept are inversely related. Lesser the slope higher the intercept |
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Property of average |
An average can never measured by a point. It is always a combination of all points |
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Proportion for 3 item |
If R(B+R)>W(B+W) then R>W |
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In how many ways can three different letters be selected from the letters of the word THREE?
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One letter is duplicate so number of ways of selecting 3 letters out of 4 different letters) = 4C3
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Compound interest formula |
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T = time in year and n = number of times interest is compounded par year. R= interest rate in decimal. |
