allery349 નો વર્ગ શું છે?
A122801
B122881
C121801
D120801
Answer & Solution
Correct answer: C. 121801
1. 349 ને (350 − 1) તરીકે લખો.
2. (350 − 1)² = 350² − 2·350 + 1 = 122500 − 700 + 1.
3. આ 121801 ની બરાબર થાય છે.
_સ્રોત: RRB Group D (RRC) PYQ, તારીખ 27-10-2013 ના રોજ યોજાયેલ, પ્રશ્ન 18._
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