Puzzles Contest - 117

[HELP]

1)[/b]. Multiply 21978 by 4





Now see if you can find a pair of palindromes





2)[/b] 7. 1, 3, 6, 10





Name the next three numbers in the series





3).[/b] Can you change a rupee note in such a way that there are
exactly fifty coins? No 2 Paise coins





4)[/b]. SEVEN
VIGINTILLION, THREE HUNDRED FORTY SIX NOVEMDECILLION, SIX HUNDRED FORTY EIGHT
OCTODECILLION, FOUR SEPTEDECILLION, FIVE HUNDRED SIXTY xxxDECILLION, NINE
HUNDRED EIGHTYSIXQUINDECILLION, TWO HUNDRED FIFTEEN QUATTOUR DECILLION, THREE
HUNDRED FORTY EIGHT DUODECILLION, FOUR HUNDRED FORTY FOUR UNDECILLION, TWO
HUNDRED EIGHTYSIX DECILLION, FOUR HUNDRED FORTY FIVE NONILLION, THREE HUNDRED
AND FIVE OCTILLION, ONE HUNDRED FORTY SIX SEPTILLION, THIRTY NINE xxxTILLION;
ONE HUNDRED FORTY QUINTILLION, FORTY SIX QUADRILLION, NINE HUNDRED SIXTY





TRILLION, SIX. HUNDRED SEVENTY EIGHT. BILLION,
FIVE HUNDRED EIGHTY TWO MILLION, TWO HUNDRED FIFTY SIX THOUSAND AND THREE. Can
you write this as a numeral?



5)[/b] . How many numbers between 400 and 600 begin with or end
with a digit of 5 ?

[faraz]

gr8 puzzle dont know how to answer..

[laxmiprasanna]

1)yes,it is palondram 87912


5)13

for remaining Questions i didn't get.can any one help me.

[dasarichaitanya]

plese send me the anwer for 3Q.

[faraz]

3).No, we cant change one rupee note into fifty coins(with no 2 paise coins)!!!

[WISDOM]

1. 87912 palindrome

2. 7.1!!!!!!!!! if it is only 1,3,6,10 then next term wud' be 15,21,28 but no idea if it is 7.1. btw for the firstt ime i have seen decomal nos. in sequence

3-1 = 2

6-3 = 3

10-6=4

15-10=5

21-15=6 and so on

3. 45 coins of 1 paise

3 coins of 5 paise

2 coins of 20 paise

or

40 coins of 1 paise

8 coins of 5 paise

2 coins of 10 paise

i am sure there must be many(if not many, then at least 2 or 3) other methods of solving this.

4.bhondu banate ho

lemme write the no.

7,346,648,004,560,986,215,348,444,286,445,305,146,039,140,046,960,678,582,256,003

arre! i have messed up somewhere. somewhere 000 are to be added. what's this xxxdecillion(my answer is not exactly correct)

5. 405,415...495 = 10

500-599 = 100 (all start with 5)

so, 110 digits, right? i always miss one or 2 nos, so take care!