How many times do the two hands of a clock coincide in 38 hours? Plz tell me the approach and answer of it Thanks
how many meaningful words can be formed from word triangle
Till what time in 2017 we can access time's student home page . Our Credentials wouldl be valid in feb 2017 ??
Anyone here working with any coaching institute as faculty??
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How many interested for numbers session?
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When trying to calculate (approximate) a fraction p/q, add a value to the denominator and a corresponding value to the numerator before calculating (approximating).
Example,What is the value of 1789/762 ?First the denominator. We can either take it close to 750 or to 800.
Lets see how it works in both cases. We know that the answer is between 2 and 3, so for adding values / subtracting values from the denominator or the numerator, I will consider a factor of 2.5.
Case 1: 762 is 12 above 750, so I will subtract 12 from the denominator. Keeping the factor of 2.5 in mind, I will subtract 25 from the numerator.My new fraction is,(1789 - 25) / (762 - 12) = 1763 / 750 = 1763 ? (4 / 3000 ) = 7.052 / 3 = 2.350666Actual answer is 2.34776.
As you can see, with very little effort involved in approximation, we arrived really close to the actual answer.
Case 2: 762 is 38 below 800, so I will add 38 to the denominator. Keeping the factor of 2.5 in mind, I will add 95 to the numerator.My new fraction is,(1789 + 95) / (762 + 3 = 1884 / 800 = 2.355As you can see, even this is close to the actual answer. The previous one was closer because the magnitude of approximation done in the previous case was lesser.
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🍻 BASICS OF CALENDARS 🍻
Welcome to this simple and interesting lesson on Calendars!Let’s begin with a simple problem.
Suppose 12th June 2013 is a Wednesday.
So, 12th July 2013 would fall on which day of the week?
This question can be solved in just 3 steps!
Step 1: Calculate the number of days between the two dates.June is a 30 day month – so we would have 30 days between the two dates.
Step 2: Divide the number of days by 7 and note down the remainder.30 / 7 gives 2 as remainder.
Step 3: Consider the reference day as zero and add the remainder to it.Wednesday = 0Thursday = 1Friday = 2Thus, July 12 would be Friday.
Do note that each day repeats itself after 7 days. In questions on calendars, the extra days are called “odd days”. So we have 2 odd days in the previous question. Hence, we added the number of odd days to the given day (Wednesday + 2 = Friday) to get the required day.
In how many ways can faces of dice be painted with six colours, using different colours for each face?
Plz solve this and the answer is not given
And this one also, thanks
Whats the last two digit of (183)^493
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How could I solve without x, plz help
My answer is comming out as 39200. Please help Q22!!
guys i was seriouly destroyed in VA?RC section in cat 2016, please suggest any good mentors in delhi/ncr.
PS.....ALCHEMIST mat kehna bas,......
Hi folks
Beginning with the concept of last/ unit digit for the New buds 🍻
UNIT DIGIT /LAST DIGIT
1) Finding remainder with divisor 10.
2) In any step of calculation , just bother about the last digit.
3) rule of cyclicity
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the rule of 4 tells us that for higher powers after every interval of 4, the unit digit gets repeated . so basically we need to break the higher power in the form of 4k
ie (ab)^ (4k)
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example 24 ^ 400
======4^400
======4^(4*100)
======4^4= 256=6
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Plz solve this
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