prove that 7 + sinx/n=13

Only genius can solve this ðŸ™‚

here n is common between numerator and denometor thus

7 + six = 13

7 + 6 = 13

13 = 13

LHS = RHS

hence proved

In this category we have mathematical puzzles which requires some kind of math to solve, like: algebra, equations, permutation and combinations.

Some of these maths puzzles are very simple and some are very hard, check these out, we are sure you will like it for sure.

prove that 7 + sinx/n=13

Only genius can solve this ðŸ™‚

7 + sinx/n=13

here n is common between numerator and denometor thus

7 + six = 13

7 + 6 = 13

13 = 13

LHS = RHS

hence proved

Let me see how clever everyone is…

Solve the riddle :

Think properly and then answer

Check your answer:-

one 9 in every 10s (like 9, 19, 29, etc) => 10

extra 10 9s in 90 – 99 => 10

thus total 20

extra 10 9s in 90 – 99 => 10

thus total 20

One-tenth of the cars in a car park are yellow. Another car arrives and now one-ninth of the cars are yellow.

Check your answer:-

lets say there are total x cars, thus

x/10 number of cars are yellow initially.

x/10 number of cars are yellow initially.

as yellow car’s percent increases from 1/10th to 1/9th after new car arrives, so new car must be a yellow car.

So we can form this equation

1 + x/10 = (x+1)/9

Now we just need to solve this equation

on multiplying both sides by 9*10 =>

9*10 + 9x = 10x + 10

90 – 10 = 10x – 9x

x = 80

So there were 8 yellow cars initially among a total of 80 cars(i.e. 1/10th)

and a new yellow cars comes making 9 yellow cars in total of 81 cars.(i.e. 1/9th)

So **answer to the question is 81**. there are a total of 81 cars now.

A shopkeeper gives a full bottle of soft drink in return for five empty bottles. A guy has 77 empty bottles and he can use them to get full soft drink bottles.

How many filled bottles will he be able to collect?

Solve this puzzle

What will be the value of Yellow flower + Red flower*Blue Flower?

Check your answer:-

Answer With Explanation**Explanation**:

from first equation red flower = 20

from second equation blow flower = (30 – 20)/2 = 5

from third equation 5 – 2yelloflower = 3 => yello flower = (5-3)/2 = 1

Thus Yellow flower + Red flower*(Blue Flower with four petals)

yes thats the catch, blue flower with 4 petals should be of value 4

= 1 + 20 *4 = 81, remember BODMAS rule, multiplication first.

Can you solve this Math Equation?

Check your answer:-

Answer With ExplanationYou can solve it easily if you read the question carefully.

we want to know X%y,i.e. X percent of y and not x multiplied by y.

X%y = X*y/100 = (200/y)*(y/100) = 2

If we do 1 push up repetition per day, 3 sets, then increase it by one rep per week for same three sets, how many push ups will we be doing in 6months?

Check your answer:-

Answer With SolutionLet’s assume 30 days in a month, so 6*30 = 180 days in 6 months, i.e. 180/7 = 25weeks + 5 days.

number of push ups in first week 3*7 = 21

so total number of push ups in 25 weeks = 21 + 21*2 + 21*3 …. 21*25

its an arithmetic progression with a1 = 21 and d = 21

its Sum = n(a1+an)/2 = Â 25(21 + 21*25)/2 = 21*25*26/2 = 6825

Push ups done in 5 days = 21*26*5/7 = 26*15 = 390

Total push ups in 6 monthsÂ = 6825 + 390 = 7215.

jane, ali and pat each planted a tree 90cm in height . in the time it took jane’s tree to grow by 1 cm, ali’s tree grow by 2 cm. by the time it took ali tree to grow by 2cm pat tree grow by 3 cm . how tall was jane tree when pat tree was 108 cm in height.

Check your answer:-

Answer With SolutionAnswer: 96cm

Solution: let’s say jane’s tree grow by 1cm in X time, and in the same time ali’s tree grow by 2cm and pat’s tree grow by 3cm.

so to grow 108 – 90 = 18 cm, pat’s tree should take 18/3 = 6X time and jane’s tree should grow by 6cm in the same time.

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