In how many different ways can the letters of the word ‘CURIOES’ be arranged in such a way that the vowels occupy only the odd positions?

If 6$144 = 24, 8$232 = 29 then what is the value of 5$110 = ?

If '$ means +',  '# means –,  '@ means ×' and  '* means ÷', then what is the value of  ' 16 $ 4 @ 5 # 72 * 8 ' ?

Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.

65 * 45 * 25 * 5 * 35 * 60

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.

32 * 366 * 6 * 2 * 134 = 20

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation:

76 *(5*8*4)*9*75

Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.

5 * 14 * 6 * 8 * 9 * 502

If 65 + 54 = 2, 71 + 62 = 10, then 73 + 83 = ?

Which two signs should be interchanged to make the following equation correct?

5 × 8 ÷ 2 – 4 = 30 + 6