Question

How can I get the answer without multiplying the whole thing? Explain with reason please.

Answer 1

may answer is 45
plz tell me the correct answer

Answer 2

here the answer will be 35.

trick ,only for this question.

firstly multiply unit digit of last two numbers and then subtract the sum of unit digit of these two numbers from the product of these unit digits of last two numbers.
as it is ,

7×7 -7+7 =49-14 =35

or further more trick about two digit having seven is at its unit place--this trick is only for
last two digit ,

(1). 17×17 ,here Number of digits is =2
and unit digit of this number is =9

so last two digit =29

similarily in ,

(2). 17×17×17×17

total no,number,n=4
unit digit =1
so the last two digit =41

and similarily in,

(3). 17×17×17×17×17×17
total no.=6
unit digit=9
so, last two digit =69.
note:- this trick is only applicable for 17 and in the multiplication of similar Number.

hope it helped a little !!
thank you !!
be Brainly!!