The same option should not generate same as result

Hi,

i am working on a maths game which have 3 choice

I got a bug i.e in 3 choice 1 is result and remaining 2 will generate randomly like result+5 and result+8

but sometimes in these 2 choices one option is generating as same as result

so this is my bug can u please help me how to fix this

Please post your capx or a screenshot of your event sheet.