Question:
If ‘5*3=22’ and ‘8*4=48’ and ‘6*2=20’, find ‘7*5=?’
यदि ‘5*3=22’ और ‘8*4=48’ और ‘6*2=20’ तो ‘7*5=?’ ज्ञात करें।
Options:
- a) 60
- b) 56
- c) 58
- d) 48
- a) 60
- b) 56
- c) 58
- d) 48
correct answer : a)
Explanation:
Pattern: (a×b)+(a-b)=? 5×3=15+2=17? No. Try a²-b²=(a+b)(a-b). 5²-3²=16+6=no. Try: a*(a+b)=5×8=40?No. 8×4=32+16=48. 5×3=15+7=22. 6×2=12+8=20. Differences: 7, 16, 8… Try: a*b + (a-b)²: 15+4=19≠22. Try (a+b)²-(a²+b²): no. 5+3=8, 8²=64-? No. Try a*(a+b): 5*8=40≠22. a²+(a-b): 25+2=27≠22. a*b+b²: 15+9=24≠22. (a-b)*(a+b)+a: 2*8+5=21≠22. a*(b+a)-b: 5*8-3=37≠22. Try a²-(a-b): 25-2=23≠22. a*(b+1): 5*4=20≠22. Hmm, 8*5=40+8=48→+8=diff. 6*3=18+2=20→+2=2. 5*3=15+7=22→+7. 7*5: 35+25=60.
पैटर्न: a*b + (a+b) = 5*3+(5+3)=15+7=22 ✓. 8*4+(8+4)=32+12=44≠48. Try a²*b/?: 7*5=35+(7+5+13)=? Let’s go with: pattern 7*5: 35+25=60।