400 by repeated subtraction
Answers
Answered by
10
Answer:
Step-by-step explanation:
400-1=399
399-3=396
396-5=391
391-7=384
384-9=375
375-11=364
364-13=351
351-15=336
336-17=319
319-19=300
300-21=279
279-23=256
256-25=231
231-27=204
204-29=175
175-31=144
144-33=111
111-35=76
76-37=39
39-39=0
thus no. of steps =20
so √400=20
Answered by
2
Answer:
Step-by-step explanation:
400-1=399
399-3=396
396-5=391
391-7=384
384-9=375
375-11=364
364-13=351
351-15=336
336-17=319
319-19=300
300-21=279
279-23=256
256-25=231
231-27=204
204-29=175
175-31=144
144-33=111
111-35=76
76-37=39
39-39=0
thus no. of steps =20
so √400=20
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