Rashi said, "I am adding 3 four-digit numbers." Which of the following statement describes what Rashi should expect as her sum ? (a) A three-digit sum because she is adding three numbers. (b) A four-digit sum because she is adding four-digit numbers. (c) She will get answer above 10,000. (d) Either a four-or five-digit number because she may be adding numbers that could be as small as 1,000 or as large as 9,999.
Select the CORRECT options.
AXIV + XXXVI = LX
BXX XVIII = II
CXXXV + XXIX = LXVII
DLX XXXIX = XXII
no '-' is put ???
The least number of square tiles that will be needed to pave a plot 225 m by 30 m is _____.
A 30 tiles
B 15 tiles
C 25 tiles
D 45 tiles
the answer should be 30. the side of one tile is 15 cm ,but they have asked the tile so it should be 30 only . and those who say that children who are having the answer30 have no brains they only don't have brains
It should be 15 because the area is not divisible by 15 ........... ALSO if the area be divisible by 30 , but they asked the least number of tiles ......so it cannot be 30 at all
you should all think a bit(mine answer is also gicen wrong) and read the question properly , I THINK WE SHOULD TRY TO FIND OUT THE NO. OF TILES BY TAKING HCF OF 225 AND 30 . REASONS1)BECAUSE THE CHAPTER IS ABOUT NO. CALCULATION , NOT MENSURATION2) YOU DO NOT HAVE A DEFINITE METHOD BY FIRST FINDING THE AREA AND THEN DOING ALL THESE THINGS . THIS METHOD DOES NOT MAKE SENSEso , first of all , we should try out with hcf best of luck!
Obviously it should be 15 how 225 is supposed to be divisible by 30 without integers so dedinetly answer is 15
found the solution! the answer is correctif we find hcf of 225 and 30 , WE ARE FINDING OUT THE LENGTH OF ONE SIDE OF A TILE , NOT THE NO. OF TILESTHEN , WE FIND THE AREA OF ONE TILE , THAT IS 15*15=225NOW, DIVIDE THE AREA OF PLOT BY AREA OF ONE TILE .YOU WILL GET THE ANSWER I.E 30
But they asked how many tilesThe side of one tile is 15cmso if you divide 225x30 (area of the floor)by 15x15 ( area of one tile) you get 30 so 30 is the answer