यदि 9 ⊗7 = 32, 13 ⊗7 = 120 तथा 17 ⊗9 = 208 है तो 19 — 11 होगा −

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यदि 9 ⊗7 = 32, 13 ⊗7 = 120 तथा 17 ⊗9 = 208 है तो 19 — 11 होगा −