Correct answer: C. (A)-(III), (B)-(II), (C)-(IV), (D)-(I)
All four series are built on cubes. (A) is n³ + 1 (1+1, 8+1, 27+1, …), so P = 6³ + 1 = 217 (III). (B) is n³ + n (1+1, 8+2, 27+3, …), so P = 216 + 6 = 222 (II). (C) is n³ + 3 starting from n = 0 (0+3, 1+3, 8+3, …), so P = 216 + 3 = 219 (IV). (D) is n³ + 4 (1+4, 8+4, 27+4, …), so P = 216 + 4 = 220 (I). Hence (A)-(III), (B)-(II), (C)-(IV), (D)-(I).चारों शृंखलाएँ घनों पर आधारित हैं। (A) में n³ + 1 है (1+1, 8+1, 27+1, …), अतः P = 6³ + 1 = 217 (III)। (B) में n³ + n है (1+1, 8+2, 27+3, …), अतः P = 216 + 6 = 222 (II)। (C) में n = 0 से आरंभ करते हुए n³ + 3 है (0+3, 1+3, 8+3, …), अतः P = 216 + 3 = 219 (IV)। (D) में n³ + 4 है (1+4, 8+4, 27+4, …), अतः P = 216 + 4 = 220 (I)। अतः (A)-(III), (B)-(II), (C)-(IV), (D)-(I)।
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