Question : What is the value of (2² + 1)(2⁴+1)(2⁸ + 1)(2¹⁶ + 1) .........(2¹²⁸ + 1)?

Option 1: $\frac{2^{256}-1}{2}$

Option 2: $\frac{2^{256}-1}{3}$

Option 3: $2^{256}-1$

Option 4: $\frac{2^{256}-1}{4}$

Question : If the total surface area of a cube is 96 cm², its volume is:

Option 1: 56 cm³

Option 2: 16 cm³

Option 3: 64 cm³

Option 4: 36 cm³

Question : Most of the computers available today are:

Option 1: 3^rd generation computers

Option 2: 4^th generation computers

Option 3: 5^th generation computers

Option 4: 6^th generation computers

Question : The marked price of an item is Rs. 900. On purchases of 2 items, the discount is 16% and on purchases of 5 items, the discount is 44%. Raksha buys 7 items, what is the effective discount?

Option 1: 10%

Option 2: 16%

Option 3: 36%

Option 4: 9.6%

Question : The correct electronic configuration of Cu is:

Option 1: [Ar]3 d⁹ 4 s²

Option 2: [Kr]3 d⁹ s²

Option 3: [Kr]3 d¹⁰ s¹

Option 4: [Ar]3 d¹⁰ 4 s¹