सही विकल्प: A

2 [ 1 - { 4¹/₄ - 4 ( 1.2 × 1/2 + 1/3 ) } ] ÷ ( 1/2 + 1.25 ) का ( 1 - 1/7 ) = ?
⇒ ? = 2 [ 1 - { 17/4 - 4 ( 1.2 × ( 3 + 2 )/6 } ] ÷ ( 1/2 + 1.25 ) × ( 7 - 1 )/7
⇒ ? = 2 [ 1 - { 17/4 - 4 ( 1.2 × 5/6 } ] ÷ ( 1+ 1.25 )/2 × 6/7
⇒ ? = 2 [ 1 - { 17/4 - 4 } ] ÷ 3.5 /2 × 6/7
⇒ ? = 2 [ 1 - { 17/4 - 4 } ] ÷ 3/2 ⇒ ? = 2 [ 1 - 1/4 ] × 2/3 ⇒ ? = 6/4 × 2/3 = 1
∴ ? = 1
अतः इसका मान 1 होगा ।