Below are some good 6 number puzzle which really improves some number skills
(1)A 5digit number has the follow the below rule
If we put 1 at the beginning we get a number 3 times smaller than if we put the numeral 1 at the end of the number.
(2)Divide below weight in such a way that 3 box contains 25kg each
15 kg, 13kg, 11 kg, 10 kg, 9 kg, 8 kg, 4 kg, 2 kg, 2kg, 1 kg
(3)Pervej asked his Granny how old she was. Rather than giving him a straight answer when condition are given below
I have 6 children and there are 4 years gap between each one and the next. I had my first child when I was 19. Now the youngest one is 19 herself.
How old is Pervej Granny
(4)I have 1000 rs i need to buy some cakes which are off 40rs and 30 rs and 150rs is for creating these cakes can you provide how many cakes i can buy in 1000rs
(5)Questions is
If 0.0xyxyxy...... =2/55 find the value of ab
Answer are given below
(i)18
(ii)36
(iii)76
(iv)72
(6)Three friends go to hotel for there dinner and got a bill of 300 rs so they divide it in 3 parts and each pay 100 rs each.
The owner of hotel return 50 rs to them as due to some error in bill so each. So each decide to pay 20 rs as a tip and 10 rs in each of friends. SO they are little confuse in it.
(i)100-10=90 each have spend 90 rs
(ii)90*3=270 so toal expend by each is 270 rs
(iii)They tip 20rs to waiter so total is 270+20=290 where is 10 rs gone
Solution of above questions
(1)Soultion
(i)Let suppose number should be n
(ii)As we have to add 1 at beging so number should be 100000 more then its previous version
(iii)And 3 times means 3(100000+n)
(iv)and if we add add 1 at end of number then it is 10*n+1 so eqation is
3(100000 + n) = 10n+1
10n+1 = 3(100000 + n)
10n+1 = 300000 + 3n
10n = 299999 + 3n
7n = 299999
n = 299999/7 = 42857
The answer is 42857
(2) Solution are given below
{15,10}, {13,8,4}, {11,9,2,2,1}
{15,10}, {13,11,1}, {9,8,4,2,2}
{15,10}, {11,8,4,2}, {13,9,2,1}
{15,10}, {11,9,4,1}, {13,8,2,2}
{11,10,4}, {15,8,2}, {13,9,2,1}
{11,10,4}, {15,9,1}, {13,8,2,2}
{13,8,4}, {15,9,1}, {11,10,2,2}
{13,10,2}, {15,8,2}, {11,9,4,1}
{13,10,2}, {15,9,1}, {11,8,4,2}
{13,11,1}, {15,8,2}, {10,9,4,2}
(3)Solution is given below
(i)child born: Granny is 19 (First)
(ii)child born: Granny is 23 (19 + 4) (Second)
(iii) child born: Granny is 27 (23 + 4) (Third)
(iv) child born: Granny is 31 (27 + 4) (Fourth)
(v) child born: Granny is 35 (31 + 4) (Fifth)
(vi) child born: Granny is 39 (35 + 4) (Sixth)
(vii) child is 19: Granny is 58 (39 + 19) (19 plus year)
(4)Below are some very quick answer
(i)19 (19*40) + 3 (3*30)= 22(850) =22 cakes +150rs
(ii)16(16*40) +7 (7*30)=23(850)=23 cakes +150rs
(iii)13(13*40)+ 11(11*30)=24(850)=24 cakes +150rs
(iv)10(10*40)+ 15 (15*30)= 25(850)=25 cakes +150rs
(v)7(7*40)+ 19 (19*30)=26(850)=26 cakes +150rs
(vi)4(4*40)+ 23 (23*30) =27(850)=27 cakes +150rs
(vii)1(1*40)+ 27 (27*30) =28(850)=28 cakes +150rs
(5)(1)Answer
let supose
(a)x=0.0ababab
(b)10x=0.ababab
(c)1000x=ab.abab
now subtract b from c we get below
1000x-10x=ab.abab-0.abab
990x=ab
x=ab/990=2/55
ab=36
(6)SOlution is that there bill is of 250 rs and and each friend have now get 10rs more so
250+30=280 and tip is of 20 rs so it is 280+20=300 rs | |