alleryಚುಕ್ಕೆಗಳು 1, 3, 6, 10, 15 ಚುಕ್ಕೆಗಳೊಂದಿಗೆ ತ್ರಿಕೋನಗಳನ್ನು ರೂಪಿಸುತ್ತವೆ. ಮುಂದಿನದರಲ್ಲಿ ಎಷ್ಟು ಚುಕ್ಕೆಗಳಿವೆ?
A28
B21
C24
D20
Answer & Solution
Correct answer: B. 21
ಅಂತರವು ಪ್ರತಿ ಬಾರಿ ಒಂದರಂತೆ ಬೆಳೆಯುತ್ತದೆ (2, 3, 4, 5), ಆದ್ದರಿಂದ ಮುಂದಿನ ಅಂತರವು 6 ಮತ್ತು 15 + 6 = 21.
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